C21000 Gilding Brass

Standards: B36/B36M, J463, J461, B927/B927M, B587, & B134/B134M

C21000 Gilding Brass is known for its excellent corrosion resistance and cold workability, and its moderate hot workability. C21000 Gilding Brass is used for the creation of coins, medals, tokens, bullet jackets, firing pin supports, fuse caps, primers, emblems, plaques, and the base for gold plates. This copper has excellent hot workability.

C21000 Gilding Brass Alloy Specifications

Chemical Composition

	Elements
	Cu⁽¹⁾	Pb	Zn	Fe
(1) Cu + Sum of Named Elements 99.8% min.
Min (%)	94.0
Max (%)	96.0	0.05	Rem	0.05

Mechanical Properties

Form	Temper	Temper Code	Tensile Strength (ksi)	YS-0.5% Ext (ksi)	Elongation (%)	Rockwell B scale	Rockwell F scale	Rockwell 30T scale	Shear Strength (ksi)	Torsion Modulus (ksi)	Ultimate Tensile Strength in Shear (ksi)	Section Size (in)
* Measured at room temperature, 68°F (20°C).
Flat Products	1/2 Hard	H02	48 Typ	40 Typ	12 Typ	52 Typ		54 Typ	34 Typ			0.04
	1/4 Hard	H01	42 Typ	32 Typ	25 Typ						32 Typ	0.04
	1/4 Hard	H01	42 Typ	32 Typ	25 Typ	38 Typ		44 Typ	32 Typ			0.04
	Extra Hard	H06	61 Typ	55 Typ	4 Typ	70 Typ		64 Typ	39 Typ	6.4 Typ		0.04
	Hard	H04	56 Typ	50 Typ	5 Typ	64 Typ		60 Typ	37 Typ			0.04
	Hard	H04	56 Typ	50 Typ	5 Typ						37 Typ	0.04
	Nominal Grain Size 0.015 mm	OS015	38 Typ	14 Typ	42 Typ		60 Typ	15 Typ	30 Typ			0.04
	Nominal Grain Size 0.035 mm	OS035	35 Typ	11 Typ	45 Typ		52 Typ	4 Typ	28 Typ			0.04
	Nominal Grain Size 0.050 mm	OS050	34 Typ	10 Typ	45 Typ		46 Typ					0.04
	Spring	H08	64 Typ	58 Typ	4 Typ						40 Typ	0.04
	Spring	H08	64 Typ	58 Typ	4 Typ	73 Typ		66 Typ	40 Typ			0.04

Physical Properties


Melting Point - Liquidus°F	1950
Melting Point - Solidus°F	1920
Densitylb/cu in. at 68°F	0.32
Specific Gravity	8.86
Electrical Conductivity% IACS at 68°F	56
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F	135
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F)	10
Specific Heat CapacityBtu/ lb /°F at 68°F	0.09
Modulus of Elasticity in Tensionksi	17000
Modulus of Rigidityksi	6400

Fabrication Properties

Technique	Suitability
Soldering	Excellent
Brazing	Excellent
Oxyacetylene Welding	Good
Gas Shielded Arc Welding	Good
Coated Metal Arc Welding	Not Recommended
Spot Weld	Not Recommended
Seam Weld	Not Recommended
Butt Weld	Good
Capacity for Being Cold Worked	Excellent
Capacity for Being Hot Formed	Good
Machinability Rating	20

Common Fabrication Processes

Blanking
Coining
Drawing
Etching
Forming and Bending
Piercing and Punching
Shearing
Spinning
Squeezing and Swaging
Stamping

Thermal Properties

Treatment	Minimum^*	Maximum^*
^* Temperature is measured in Fahrenheit.
Annealing	800	1450
Hot Working Temperature	1400	1600

Typical uses

Product Category	Product	Reason Category	Reason
Architecture	Ornamental Trim	Appearance	Appearance
	Ornamental Trim	Corrosion Resistance	Corrosion Resistance
	Ornamental Trim	Mechanical Properties	Moderate Strength
	Ornamental Trim	Plating Characteristics	Plateable
Consumer	Emblems	Appearance	Appearance
	Emblems	Corrosion Resistance	Corrosion Resistance
	Emblems	Forming Characteristics	Formability
	Emblems	Mechanical Properties	Moderate Strength
	Emblems	Plating Characteristics	Plateable
	Jewelry	Appearance	Appearance
	Jewelry	Corrosion Resistance	Corrosion Resistance
	Jewelry	Forming Characteristics	Formability
	Jewelry	Mechanical Properties	Moderate Strength
	Jewelry	Plating Characteristics	Plateable
	Plaques, Medallions	Appearance	Appearance
	Plaques, Medallions	Finishing Characteristics	Accepts Lacquers
	Plaques, Medallions	Forming Characteristics	Coinability
	Plaques, Medallions	Forming Characteristics	Formability
	Plaques, Medallions	Plating Characteristics	Base for Gold Plate
Electrical	Connectors	Conductivity (Electrical)	Electrical Conductivity
	Connectors	Conductivity (Thermal)	Thermal Conductivity
	Connectors	Corrosion Resistance	Corrosion Resistance
	Connectors	Forming Characteristics	Formability
	Connectors	Mechanical Properties	Moderate Strength
	Rotor Bars, AC Motors	Brazing Characteristics	Brazability
	Rotor Bars, AC Motors	Conductivity (Electrical)	Electrical Resistivity
	Rotor Bars, AC Motors	Mechanical Properties	Moderate Strength
Fasteners	Fasteners	Appearance	Appearance
	Fasteners	Corrosion Resistance	Corrosion Resistance
	Fasteners	Forming Characteristics	Formability
	Fasteners	Mechanical Properties	Moderate Strength
Industrial	Base for Gold Plate	Mechanical Properties	Moderate Strength
	Base for Gold Plate	Plating Characteristics	Plateable
	Base for Vitreous Enamel	Mechanical Properties	Moderate Strength
	Base for Vitreous Enamel	Plating Characteristics	Plateable
Ordnance	Bullet Jackets	Corrosion Resistance	Corrosion Resistance
	Bullet Jackets	Forming Characteristics	Formability
	Bullet Jackets	Mechanical Properties	Moderate Strength
	Firing Pin Support Shells	Corrosion Resistance	Corrosion Resistance
	Firing Pin Support Shells	Forming Characteristics	Formability
	Firing Pin Support Shells	Mechanical Properties	Moderate Strength
	Fuse Caps	Corrosion Resistance	Corrosion Resistance
	Fuse Caps	Forming Characteristics	Formability
	Fuse Caps	Mechanical Properties	Moderate Strength
	Fuse Caps	Plating Characteristics	Plateable
	Primers	Corrosion Resistance	Corrosion Resistance
	Primers	Forming Characteristics	Formability
	Primers	Mechanical Properties	Moderate Strength
	Small Arm Ammunition:Primer Caps, Bullet Jackets	Corrosion Resistance	Corrosion Resistance
	Small Arm Ammunition:Primer Caps, Bullet Jackets	Corrosion Resistance	Stress Corrosion Cracking Resistance
	Small Arm Ammunition:Primer Caps, Bullet Jackets	Forming Characteristics	Formability
	Small Arm Ammunition:Primer Caps, Bullet Jackets	Mechanical Properties	Moderate Strength
Other	Coins	Appearance	Appearance
	Coins	Forming Characteristics	Coinability
	Coins	Plating Characteristics	Plateable
	Medals	Appearance	Appearance
	Medals	Corrosion Resistance	Corrosion Resistance
	Medals	Forming Characteristics	Formability
	Medals	Mechanical Properties	Moderate Strength
	Medals	Plating Characteristics	Plateable
	Tokens	Corrosion Resistance	Corrosion Resistance
	Tokens	Forming Characteristics	Coinability
	Tokens	Forming Characteristics	Formability
	Tokens	Mechanical Properties	Moderate Strength

Applicable Specifications

Form	System	Standard	Description
Bar	ASTM	B36/B36M	BRASS PLATE, SHEET, STRIP AND ROLLED BAR
	SAE	J463	WROUGHT COPPER AND COPPER ALLOYS
	SAE	J461	WROUGHT AND CAST COPPER ALLOYS
Plate	ASTM	B36/B36M	BRASS PLATE, SHEET, STRIP AND ROLLED BAR
Rod, Bar & Shapes	ASTM	B927/B927M	BRASS ROD, BAR, AND SHAPES
Sheet	ASTM	B36/B36M	BRASS PLATE, SHEET, STRIP AND ROLLED BAR
	SAE	J461	WROUGHT AND CAST COPPER ALLOYS
	SAE	J463	WROUGHT COPPER AND COPPER ALLOYS
Strip	SAE	J463	WROUGHT COPPER AND COPPER ALLOYS
	ASTM	B36/B36M	BRASS PLATE, SHEET, STRIP AND ROLLED BAR
	SAE	J461	WROUGHT AND CAST COPPER ALLOYS
Tube	ASTM	B587	WELDED BRASS TUBE
Wire	ASTM	B134/B134M	BRASS WIRE

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