Silicon Bronze | McMaster-Carr

	Material Material

655 Bronze

Silicon-Bronze Alloy

Silicon Bronze

	Shape Shape


Rod and Disc	Ingot

	For Joining For Joining

	Diameter Diameter

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Hardness Hardness

Rockwell B75

Not Rated

	Hardness Rating Hardness Rating

Medium

Not Rated

	Certificate Certificate

	Material Certificate with Traceable Lot Number

	Thread Size Thread Size

	Length Length

	Thread Spacing Thread Spacing

Coarse

Fine

	Thread Type Thread Type

UNC

UNF

	Thread Fit Thread Fit

Class 1A

Class 2A

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40 Products

About Copper, Brass, and Bronze

About Threaded Studs and Rods

Yield Strength: 43,000 psi
Hardness:
1/4" to 3/8" dia. rods: Not Rated
All other sizes: Rockwell B75 (Medium)
Temper: H04 (Full Hard)
Heat Treatable: No
Specifications Met: ASTM B98

Commonly called silicon-bronze, 655 bronze contains more silicon than other bronze alloys, making it suitable for all types of welding. With excellent formability and corrosion resistance, it's often used to make parts for marine applications, as well as in pumps and boilers.

For technical drawings and 3-D models, click on a part number.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia.	Dia. Tolerance Range	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1/4"	-0.002" to 0.002"	1/4" per 10 ft.	00000000	00000	000000	000000
5/16"	-0.002" to 0.002"	1/4" per 10 ft.	00000000	00000	00000	00000
3/8"	-0.002" to 0.002"	1/4" per 10 ft.	00000000	00000	00000	00000
1/2"	-0.002" to 0.002"	1/4" per 10 ft.	00000000	00000	00000	00000
5/8"	-0.004" to 0.004"	1/4" per 10 ft.	00000000	00000	00000	000000
3/4"	-0.004" to 0.004"	1/4" per 10 ft.	00000000	00000	000000	000000
1"	-0.004" to 0.004"	1/4" per 10 ft.	00000000	00000	000000	000000
1 1/4"	-0.004" to 0.004"	1/4" per 10 ft.	00000000	000000	000000	000000
1 1/2"	-0.004" to 0.004"	1/4" per 10 ft.	00000000	000000	000000	000000

MIG Welding Wire for Joining Copper to Steel

						2 lbs.
Dia.	Wire Type	Welding Current Designation	Shielding Gas Required	Shielding Gas Included	Approximate Lg. per Pound, ft.	Spool Dia.	Arbor Hole Size		Each
ERCuSi-A
0.035"	Solid	DCEP	Yes	No	350	4"	0.63"	0000000	000000

Casting Metals

Melt and pour these alloys into molds to create metal parts and prototypes.

Silicon-bronze alloy is often used to cast gears, propellers, bells, and plaques. It renders an excellent surface finish.

Silicon-Bronze Alloy

	Material Composition
Melting Temperature, °F	Zinc	Copper	Silicon	Approximate Wt., lbs.	Shape		Each
1,780°	4%	92%	4%	1	Ingot	0000000	000000

Bronze Threaded Rods

Bronze threaded rods are stronger and more resistant to salt water than brass rods. They're electrically conductive and nonmagnetic.