Commercial Bronze (90/10)

90.0 Cu | 10.0 Zn | 20 Relative Machinability | "S" Weight Factor - 11.99

Physical Properties:

Composition (Percent) Copper 89 min 91 max, Lead .05 max., Iron .05 max., Zinc rem.
Nearest Applicable ASTM Specifications B135, B372, B587
Melting Point (Liquidus) 1910 F
Density .318 lb / cu in. @ 68 F
Specific Gravity 8.80
Cold Working Capacity Excellent
Hot Forming Capacity Good
Hot Forgeability Rating n/a (Forging Brass = 100)
Hot Working Temperature 1400 - 1600 F or 750 - 875 C
Annealing Temperature 800 - 1450 F or 425 - 800 C
Machinability Rating 20 (Free Cutting Brass = 100)

Mechanical Properties for 1.00 OD x .065 Wall Tubing:

Temper Tensile Strength Yield Strength * Elongation in 2 in. Rockwell Hardness (F) Rockwell Hardness (B) Rockwell Hardness (30T) Shear Strength
.035 mm 38.0 ksi 12.0 ksi 50 % 57 --- 12 ---

* (.5% Ext. under Load)

Drawn - General Purpose (H58)Temper is used for general purpose tube only, usually where there is no real requirement for high strength or hardness on the one hand or for bending qualities on the other.

Hard Drawn (H80)Temper is used only where there is need for a tube as hard or as strong as is commercially feasible for the size in question.

Light Drawn - Bending (H55)Temper is used only where a tube of some stiffness, but yet capable of readily being bent (or otherwise moderately cold worked) is needed.

Typical Uses: lipstick cases, munitions primer caps, screw caps, rivets, marine hardware, screws.

NOTE: The values listed above represent reasonable approximations suitable for general engineering use. They should not be used for specification purposed. See applicable A.S.T.M specification references.

Special arrangement can be made to provide alloys not shown.