Bell metal or bell bronze is an
alloy
An alloy is a mixture of chemical elements of which at least one is a metal. Unlike chemical compounds with metallic bases, an alloy will retain all the properties of a metal in the resulting material, such as electrical conductivity, ductili ...
used for making
bells
Bells may refer to:
* Bell, a musical instrument
Places
* Bells, North Carolina
* Bells, Tennessee
* Bells, Texas
* Bells Beach, Victoria, an internationally famous surf beach in Australia
* Bells Corners, Ontario
Music
* Bells, directly st ...
and related instruments, such as
cymbals
A cymbal is a common percussion instrument. Often used in pairs, cymbals consist of thin, normally round plates of various alloys. The majority of cymbals are of indefinite pitch, although small disc-shaped cymbals based on ancient designs soun ...
. It is a form of
bronze
Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals, such as phosphorus, or metalloids suc ...
with a higher tin content, usually in approximately a 4:1 ratio of
copper
Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pink ...
to
tin (typically, 78% copper, 22% tin by mass). The higher tin content increases the rigidity of the metal, and increases the resonance. Historically, it was preferred for early
cannon
A cannon is a large- caliber gun classified as a type of artillery, which usually launches a projectile using explosive chemical propellant. Gunpowder ("black powder") was the primary propellant before the invention of smokeless powder ...
s. Today, it also has industrial uses, being specified for valve bodies, piston rings, bearings, and bushings.
Metallurgy
Tin and copper are relatively soft metals that will deform on striking (though tin to a lesser extent than copper), but alloying creates a metal which is harder and less ductile and also one with more elasticity than either of the two metals.
This metal combination produces a tough, long-wearing material that is resistant to
oxidation
Redox (reduction–oxidation, , ) is a type of chemical reaction in which the oxidation states of substrate change. Oxidation is the loss of electrons or an increase in the oxidation state, while reduction is the gain of electrons or ...
and subject only to an initial surface
weathering
Weathering is the deterioration of rocks, soils and minerals as well as wood and artificial materials through contact with water, atmospheric gases, and biological organisms. Weathering occurs '' in situ'' (on site, with little or no movement ...
.
Verdigris
Verdigris is the common name for blue-green, copper-based pigments that form a patina on copper, bronze, and brass. The technical literature is ambiguous as to its chemical composition. Some sources refer to "neutral verdigris" as copper(II) ...
forms a protective
patina
Patina ( or ) is a thin layer that variously forms on the surface of copper, brass, bronze and similar metals and metal alloys ( tarnish produced by oxidation or other chemical processes) or certain stones and wooden furniture (sheen produce ...
on the surface of bells which coats it against further oxidation.
Specifically, it is the combination of low internal damping and low internal sound velocity that makes bell metal specially suitable for resonant
percussion instruments.
Usage
Bells
Most commonly, as per its colloquial name, bell metal has been and is used for the casting of high-quality bells. The metal used is a high-tin
alloy
An alloy is a mixture of chemical elements of which at least one is a metal. Unlike chemical compounds with metallic bases, an alloy will retain all the properties of a metal in the resulting material, such as electrical conductivity, ductili ...
of
copper
Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pink ...
and
tin with approximately a 4:1 ratio of copper to
tin (78% copper, 22% tin).
This is a much higher tin component than that used in statuary bronze.
The range of percentages of tin content can vary from 20 to 26%, depending on the founder who has arrived empirically at their own alloy ratio. It has been found that increasing the tin content increases the decay time of the bell strike, thus making the bell more sonorous. Taking into consideration overall properties, such as tensile strength, hardness, wear resistance, cast quality, sound, and cost, the optimum alloy can probably be obtained by having a type bronze composition as: ~20wt.%Sn, < 2wt.%Ni, < 1.5wt.%Pb, ~0.01wt.%P, < 1wt.%Sb, with balance of Cu. Bell metal in this range of ratios has been used for more than 3,000 years and is known for its
resonance
Resonance describes the phenomenon of increased amplitude that occurs when the frequency of an applied periodic force (or a Fourier component of it) is equal or close to a natural frequency of the system on which it acts. When an oscil ...
and "attractive sound."
The crystal lattice formation of this alloy is able to absorb high-impact energies, such as from a bell clapper, without distortion, which is the case when the bell is struck.
This results in a resonant sound and causes the bell to vibrate strongly in a complex nodal system.
In Russia,
church bell
A church bell in Christian architecture is a bell which is rung in a church for a variety of religious purposes, and can be heard outside the building. Traditionally they are used to call worshippers to the church for a communal service, and to ...
s are commonly cast with a unique mixture of copper and tin, often with
silver
Silver is a chemical element with the symbol Ag (from the Latin ', derived from the Proto-Indo-European ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical ...
added, to produce their unique sonority and resonance, mastered early in Russian Christian history.
In
esoteric
Western esotericism, also known as esotericism, esoterism, and sometimes the Western mystery tradition, is a term scholars use to categorise a wide range of loosely related ideas and movements that developed within Western society. These ideas ...
Buddhism
Buddhism ( , ), also known as Buddha Dharma and Dharmavinaya (), is an Indian religion or philosophical tradition based on teachings attributed to the Buddha. It originated in northern India as a -movement in the 5th century BCE, and ...
(e.g.,
Vajrayana
Vajrayāna ( sa, वज्रयान, "thunderbolt vehicle", "diamond vehicle", or "indestructible vehicle"), along with Mantrayāna, Guhyamantrayāna, Tantrayāna, Secret Mantra, Tantric Buddhism, and Esoteric Buddhism, are names referring t ...
), handbells and singing bells may be cast with a special 5-Metal alloy. Each of the metals represents one of the
5 Buddhas / Wisdoms:
There is no standard proportion to the metals used in this alloy, although it is often around 75% copper and 20% tin with low proportions of the other metals. A 7-Metal alloy containing trace amounts of silver and gold (representing
Absolute and Relative Truth) is also sometimes used. A similar alloy is employed for the
gong
A gongFrom Indonesian and ms, gong; jv, ꦒꦺꦴꦁ ; zh, c=鑼, p=luó; ja, , dora; km, គង ; th, ฆ้อง ; vi, cồng chiêng; as, কাঁহ is a percussion instrument originating in East Asia and Southeast Asia. Gongs ...
s,
saron
SARON stands for Swiss Average Rate Overnight and represents the overnight interest rate of the secured funding market for the Swiss Franc (CHF). (Swiss Average Rate Overnight) is an overnight interest rates average referencing the Swiss Franc ...
,
demung, and numerous other struck
metallophones of the Indonesian
gamelan
Gamelan () ( jv, ꦒꦩꦼꦭꦤ꧀, su, ᮌᮙᮨᮜᮔ᮪, ban, ᬕᬫᭂᬮᬦ᭄) is the traditional ensemble music of the Javanese, Sundanese, and Balinese peoples of Indonesia, made up predominantly of percussive instruments. T ...
ensembles. In this case the tin:copper ratio is traditionally given as 3:10 by weight. Whereas bells are cast and then left to cool, the metal of Indonesian gongs and metallophones is cast as rough blanks which are then hot-forged to their final shape with hammers.
Cymbals
Cannons
Bell metal was used to cast many early
Spanish
Spanish might refer to:
* Items from or related to Spain:
**Spaniards are a nation and ethnic group indigenous to Spain
**Spanish language, spoken in Spain and many Latin American countries
**Spanish cuisine
Other places
* Spanish, Ontario, Can ...
,
Portuguese
Portuguese may refer to:
* anything of, from, or related to the country and nation of Portugal
** Portuguese cuisine, traditional foods
** Portuguese language, a Romance language
*** Portuguese dialects, variants of the Portuguese language
** Portu ...
and "Malay"
[a dated misleading term which refers geographically to the region spanning from the Thailand Peninsula through to the Philippines] cannon
A cannon is a large- caliber gun classified as a type of artillery, which usually launches a projectile using explosive chemical propellant. Gunpowder ("black powder") was the primary propellant before the invention of smokeless powder ...
s, most notably the
Malay cannon known erroneously as ''
Rentaka
The ''Lantaka'' (Baybayin: pre virama: ''ᜎᜆᜃ'': post virama: ''ᜎᜈ᜔ᜆᜃ'') also known as ''rentaka'' (In Malay) was a type of bronze portable cannon or swivel gun, sometimes mounted on merchant vessels and warships in Maritime So ...
''.
[a colloquial term, the correct term is ''meriam'' or ''durbus''] In
Java
Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's mo ...
, bell metal mixtures including tin were also used for the manufacture of
figurine
A figurine (a diminutive form of the word ''figure'') or statuette is a small, three-dimensional sculpture that represents a human, deity or animal, or, in practice, a pair or small group of them. Figurines have been made in many media, with clay ...
s,
objets d'art
In art history, the French term Objet d’art describes an ornamental work of art, and the term Objets d’art describes a range of works of art, usually small and three-dimensional, made of high-quality materials, and a finely-rendered finish th ...
,
sculptures
Sculpture is the branch of the visual arts that operates in three dimensions. Sculpture is the three-dimensional art work which is physically presented in the dimensions of height, width and depth. It is one of the plastic arts. Durable sc ...
and household goods for the wealthy. This material was also adopted by the
Javanese-influenced cultures of
Thailand
Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is b ...
,
Khmer and
Myanmar
Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John Wells explai ...
. Bell metal is particularly prized for its excellent sonorous qualities, also found in bell metal cannons which produce a distinct, loud ring when fired.
The Javanese
lantaka
The ''Lantaka'' (Baybayin: pre virama: ''ᜎᜆᜃ'': post virama: ''ᜎᜈ᜔ᜆᜃ'') also known as ''rentaka'' (In Malay) was a type of bronze portable cannon or swivel gun, sometimes mounted on merchant vessels and warships in Maritime So ...
was first cast in bell metal under an ''Empu'' of the early
Majapahit
Majapahit ( jv, ꦩꦗꦥꦲꦶꦠ꧀; ), also known as Wilwatikta ( jv, ꦮꦶꦭ꧀ꦮꦠꦶꦏ꧀ꦠ; ), was a Javanese Hindu-Buddhist thalassocratic empire in Southeast Asia that was based on the island of Java (in modern-day Indonesia ...
Empire and spread into the surrounding islands of the
Nusantara, Javanese skill in gunsmithing and cannon-founding affording military dominance over the surrounding area. Later, disaffected smiths and noble entourages emigrating from
Java
Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's mo ...
brought these cannon-founding skill to
Philippines
The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no),
* bik, Republika kan Filipinas
* ceb, Republika sa Pilipinas
* cbk, República de Filipinas
* hil, Republ ...
,
Brunei
Brunei ( , ), formally Brunei Darussalam ( ms, Negara Brunei Darussalam, Jawi: , ), is a country located on the north coast of the island of Borneo in Southeast Asia. Apart from its South China Sea coast, it is completely surrounded by th ...
,
Malaysia
Malaysia ( ; ) is a country in Southeast Asia. The federal constitutional monarchy consists of thirteen states and three federal territories, separated by the South China Sea into two regions: Peninsular Malaysia and Borneo's East Mal ...
and
Myanmar
Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John Wells explai ...
.
[, 297 pages] When
Ternate
Ternate is a city in the Indonesian province of North Maluku and an island in the Maluku Islands. It was the ''de facto'' provincial capital of North Maluku before Sofifi on the nearby coast of Halmahera became the capital in 2010. It is off the ...
was captured by the Spanish, they were astounded to find over 3,000 very finely cast bell metal cannons in the walled compound, although humorously to the Spaniards these were tied upright to veranda poles, used as
lingam
A lingam ( sa, लिङ्ग , lit. "sign, symbol or mark"), sometimes referred to as linga or Shiva linga, is an abstract or aniconic representation of the Hindu god Shiva in Shaivism. It is typically the primary '' murti'' or devoti ...
household decorations rather than weapons.
The Spanish and Portuguese were equally astounded to find their European bronze cannon offerings to the Javanese rejected as inferior in quality, as they rightly were.
After the Dutch victories, Javanese-smithed cannons of Makassar, Ternate, and the surrounding islands were taken as reparations, considered by the Dutch
as made of bronze superior to their own, and subsequently melted down and recast in Dutch standard calibres and bores.
Culturally, Javanese bronze cannons and their regional derivatives were traditionally part of a
dowry
A dowry is a payment, such as property or money, paid by the bride's family to the groom or his family at the time of marriage. Dowry contrasts with the related concepts of bride price and dower. While bride price or bride service is a payment ...
, and offering a poor-quality cast bronze cannon was a supreme insult.
Brunei
Brunei ( , ), formally Brunei Darussalam ( ms, Negara Brunei Darussalam, Jawi: , ), is a country located on the north coast of the island of Borneo in Southeast Asia. Apart from its South China Sea coast, it is completely surrounded by th ...
and
Malaysia
Malaysia ( ; ) is a country in Southeast Asia. The federal constitutional monarchy consists of thirteen states and three federal territories, separated by the South China Sea into two regions: Peninsular Malaysia and Borneo's East Mal ...
retain the tradition of a token cannon as a
dowry
A dowry is a payment, such as property or money, paid by the bride's family to the groom or his family at the time of marriage. Dowry contrasts with the related concepts of bride price and dower. While bride price or bride service is a payment ...
for weddings, and many celebrations are opened with a celebratory shot.
Utensils
In India, in the
state
State may refer to:
Arts, entertainment, and media Literature
* ''State Magazine'', a monthly magazine published by the U.S. Department of State
* ''The State'' (newspaper), a daily newspaper in Columbia, South Carolina, United States
* ''Our S ...
of
Assam
Assam (; ) is a state in northeastern India, south of the eastern Himalayas along the Brahmaputra and Barak River valleys. Assam covers an area of . The state is bordered by Bhutan and Arunachal Pradesh to the north; Nagaland and Manipur ...
, it is called ''kanh'' while in
West Bengal
West Bengal (, Bengali: ''Poshchim Bongo'', , abbr. WB) is a state in the eastern portion of India. It is situated along the Bay of Bengal, along with a population of over 91 million inhabitants within an area of . West Bengal is the fou ...
and
Odisha
Odisha (English: , ), formerly Orissa ( the official name until 2011), is an Indian state located in Eastern India. It is the 8th largest state by area, and the 11th largest by population. The state has the third largest population of ...
, ''kansa'', it is called ''Kanchu'' in
Kannada
Kannada (; ಕನ್ನಡ, ), originally romanised Canarese, is a Dravidian language spoken predominantly by the people of Karnataka in southwestern India, with minorities in all neighbouring states. It has around 47 million native s ...
and is used for cooking and eating utensils.
Sarthebari
Sarthebari (IPA:ˌsɑ:θəˈbɑ:rɪ) is a town and a town area committee in Bajali district in the Indian state of Assam. Sarthebari is home to the bell metal industry, the second largest handicraft of assam after bamboo craft. The nearby villa ...
in Barpeta district of Assam holds a unique place in the production of ''kanh'' utensils. In Assam, utensils of ''kanh'' have many religious uses and the most unusual utensils, ''bata'' and ''banbati'', are used to give offerings and
puja or to show respect to honored guests and dignitaries.
Belaguntha in
Ganjam
Ganjam is a town and a notified area council in Ganjam district in the state of Odisha, India. Brahmapur, one of the major city of Odisha is situated in this district.
Geography
Ganjam is located at in the Ganjam district of Odisha with an ...
district,
Kantilo
Kantilo is a census town in Nayagarh district in the Indian state of Odisha. Kantilo is from its state capital Bhubaneswar and from district headquarters Nayagarh. Kantilo is famous for bell metal utensil, but nowadays it is losing its sheen ...
in
Nayagarh
Nayagarh is both a town and the municipality headquarters of the Nayagarh district in the Indian state of Odisha.
Geography
Nayagarh is located at with an average elevation of 178 metres (584 feet).
It was the Rukhi mountain to the south ...
, and
Balakati near
Bhubaneswar
Bhubaneswar (; ) is the capital and largest city of the Indian state of Odisha. The region, especially the old town, was historically often depicted as ''Ekamra Kshetra'' (area (''kshetra'') adorned with mango trees (''ekamra'')). Bhubaneswar i ...
are well known for this craft in
Odisha
Odisha (English: , ), formerly Orissa ( the official name until 2011), is an Indian state located in Eastern India. It is the 8th largest state by area, and the 11th largest by population. The state has the third largest population of ...
.
In the state of Kerala, urulis (odu vessels) bring back memories of chakka varatti (jackfruit halva). In summer when jackfruits are available aplenty, huge quantities of chakka varatti would be made in the backyard over a logfire and consumed in a trice, the richness of fruits, jaggery and ghee. Urulis are made from bell metal. Vengalai panai (also made from a kind of bell metal) is synonymous with a Tamil bride's first pongal when freshly harvested rice is offered to the sun god with turmeric and sugarcane.
Notes
References
Further reading
*
External links
2008 paper - Analysis of high tin bronze for bells
{{DEFAULTSORT:Bell Metal
Bronze
Copper alloys
Tin alloys
Artillery of India