Nickel Silver Brass

The UNS Nickel Silver Brass Bars C77400 is a nickel-silver copper alloy. The alloy is used while making jewellery and ornaments owing to its silvery appearance. The alloy is known for is corrosion resistance and tarnish-free surface.

Applications :

• Architecture : Architecture: Elevator Trim, Handrails, Thresholds

Chemical Composition:

	Cu	Pb	Zn	Ni
Min/Max	43.0-47.0	0-.09	Rem	9.0-11.0

Physical Properties:

Densitylb/cu in. at 68°F	0.306	16.2 · 10 6? per °C (20-300 C)
Specific Gravity	8.47	7.89 gm/cm3 @ 20 C

Applicable Specifications:

Form	System	Standard	Description
Bar	ASTM	B124	Copper And Copper-alloy Forging Rod, Bar And Shapes
Die	ASTM	B283	Copper And Copper Alloy Die Forgings (hot Pressed)
Rod	ASTM	B124	Copper And Copper-alloy Forging Rod, Bar And Shapes
Shapes	ASTM	B124	Copper And Copper-alloy Forging Rod, Bar And Shapes

Sizes Available

HOLLOW RODS	Min Bore Size 20 mm and Max OD 100 mm
ROUND RODS/BARS	6mm To 130 mm
WIRES	1mm To 8mm
HEX	5mm To 60mm
SQUARE	4mm To 60mm
FLAT	5mm Min Thickness and max Width 120mm
PROFILES / SECTIONS	AS per Customer Drawing
BILLETS	Up to 200 mm
INGOTS	AS per Specification

The C77600 nickle silver brass imparts silvery yellow color when sanded or polished. The alloy possess excellent strength and corrosion resistance and is not easy to extrude, thus limited to relatively simple shapes with heavier walls. The “As Extruded” finish of C77600 is gray and further polishing of the alloy reveals the yellow tinted silvery color approaching stainless steel in appearance.

Applications :

• Industrial : Decorative Molding, Elevator Sills, Hardware, Architectural

Chemical Composition:

	Cu	Fe	Pb	Sn	Zn	Ni	Mn
Min/Max	42-45	0-.20	0-.25	0-.15	Rem	12-14	0-.25

Mechanical Properties :

Form	Temper Code	Tensile Strength (ksi)	Elongation (%)	Rockwell B scale	YS-0.2% Offset
Extrusions	M30	91   Typ	30   Typ	83   Typ	47   Typ

Sizes Available:

HOLLOW RODS	Min Bore Size 20 mm and Max OD 100 mm
ROUND RODS/BARS	6mm To 130 mm
WIRES	1mm To 8mm
HEX	5mm To 60mm
SQUARE	4mm To 60mm
FLAT	5mm Min Thickness and max Width 120mm
PROFILES / SECTIONS	AS per Customer Drawing
BILLETS	Up to 200 mm
INGOTS	AS per Specification

The c79800 nickel silver brass is used while manufacturing architecture ornamental castings.

Typical Uses :-

• Architecture Ornamental Castings.
• Builders Hardware.
• Consumer Musical Instruments Components.
• Industrial Valves, Fittings for Diary and Food Processing Applications.

Chemical Composition:

	Cu	Pb	Zn	Ni	Mn	Other impurities
Min/Max %	42.00-45.00	1.00-2.50	REM.	11.00-13.00	4.50-6.00	0.20 Max

Fabrication:

Joining Technique	Suitability
Soldering	Excellent
Brazing	Excellent
Oxyacetylene Welding	Not Recommended
Gas Shielded Arc Welding	Not Recommended
Coated Metal Arc Welding	Not Recommended

Mechanical Properties (according to ASTM B505-08) :

Tensile Strength(min)	Yield Strength(at .5% extention under load min)	Elongation(in 2in. or 50mm min, %)	Brinell Hardness(min)	Remarks
Ksi	MPa	Ksi	MPa
45	310	22	152	8

Mechanical Properties :

Form	Temper	Temper Code	Tensile Strength (ksi)	Elongation (%)	YS-0.2% Offset	Section Size (in)
Rod	Extra Hard	H06	103 Min 110 Typ	1 Min	84 Min 93 Typ	<.250
	Hard	H04	88.5 Min 94 Typ	5 Min	65 Min 74 Typ	<.250
		H04	88.5 Min 94 Typ	5 Min	65 Min 74 Typ	>.250
Wire	Extra Hard	H06	103 Min 110 Typ	1 Min	84 Min 93 Typ	<.250
	Hard	H04	88.5 Min 94 Typ	5 Min	65 Min 74 Typ	>.250
		H04	88.5 Min 94 Typ	5 Min	65 Min 74 Typ	<.250

Physical Properties:

Melting Point - Liquidus	1670°F
Melting Point - Solidus	1670°F
Density	0.3 lb/cu in. at 68°F
Specific Gravity	8.3
Electrical Conductivity	5% IACS at 68°F
Thermal Conductivity	17.4 Btu/ sq ft/ ft hr/ °F at 68°F
Coefficient of Thermal Expansion	10.6 10-6per °F (68 – 212°F)
Specific Heat Capacity	0.1Btu/ lb /°F at 68°F
Modulas of Elasticity in Tension	16700 ksi

Sizes Available

HOLLOW RODS	Min Bore Size 20 mm and Max OD 100 mm
ROUND RODS/BARS	6mm To 130 mm
WIRES	1mm To 8mm
HEX	5mm To 60mm
SQUARE	4mm To 60mm
FLAT	5mm Min Thickness and max Width 120mm
PROFILES / SECTIONS	AS per Customer Drawing
BILLETS	Up to 200 mm
INGOTS	AS per Specification

Applications :-

• Consumer : Ballpoint Pen Tips, Eyeglass Frames
• Industrial : Connectors, Fiberoptics, Lock Pins

Equivalent Specifications:

Specifications	Designation
BS
EN	CW407J,CW408J
JIS
DIN	2.0750
ISO	CuNi12Zn37Mn6Pb2
Russian (GOST)

Chemical Specification:

	Cu	Pb	Zn	Ni	Mn	Other impurities
Min/Max %	42.00-45.00	1.00-2.50	REM.	11.00-13.00	4.50-6.00	0.20 Max

Specifications:

Ingots
Bar
Square
Billets
Plate
Sheet
Flat
Rods
Profiles
Wire
Hollows
Hex
Tubes

Fabrication Properties:

Joining Technique	Suitability
Brazing	Fair
Butt Weld	Fair
Capacity for Being Cold Worked	Fair
Capacity for Being Hot Formed	Good
Coated Metal Arc Welding	Fair
Gas Shielded Arc Welding	Fair
Forgeability Rating	80
Oxyacetylene Welding	Fair
Seam Weld	Fair
Soldering	Good
Spot Weld	Fair

Physical Properties:

Melting Point - Liquidus	1670°F
Melting Point - Solidus	1607°F
Density	0.3 lb/cu in. at 68°F
Specific Gravity	8.3
Electrical Conductivity	5% IACS at 68°F
Thermal Conductivity	17.4 Btu/ sq ft/ ft hr/ °F at 68°F
Coefficient of Thermal Expansion 68-212	10.6 10?6 per °F (68 – 212°F)
Specific Heat Capacity	0.1Btu/ lb /°F at 68°F
Modulas of Elasticity in Tension	16700 ksi

Sizes Available

HOLLOW RODS	Min Bore Size 20 mm and Max OD 100 mm
ROUND RODS/BARS	6mm To 130 mm
WIRES	1mm To 8mm
HEX	5mm To 60mm
SQUARE	4mm To 60mm
FLAT	5mm Min Thickness and max Width 120mm
PROFILES / SECTIONS	AS per Customer Drawing
BILLETS	Up to 200 mm
INGOTS	AS per Specification