Hard Drawn - ASTM A 227 - Spring Wire Properties

High-carbon spring steels are the most commonly used of all springs materials. Try to use these materials in preference to others because that are least expensive, readily available, easily worked, and most popular. These materials are not satisfactory for high or low temperatures or for shock or impact loading.

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Hard Drawn
ASTM A 227

Nominal Chemistry

C	0.45	-	0.85%
Mn	0.60	-	1.30%

Minimum Tensile Strength
psi x 10³

CLI 147-283
CLII 171-324

E - Modulus of Elasticity
psi x 10⁶

Design Stress % Minimum Tensile

G - Modulus in Torsion
psi x 10⁶

11.5

Maximum Operating Temperature
°F

250

Rockwell Hardness

C31-52

Density
lb/in³

0.284

Shear Modulus
c GPa

11600 80.0

Method of Manufacture
Chief Uses
Special Properties

Cold drawn. Average stress applications. Lower cost springs and wire forms. Hard Drawn is the most inexpensive general purpose spring steel and should be used only where life, accuracy, and deflection are not too important.

Equivalent or Common Trade Names

227 Hard/Cold Drawn Carbon Galvanized hard-drawn ASTM A-764
HDMB
UNS K06501
ASTM A227
ASTM A764
AISI 1065
SAE J113
QQ-W-428 Type II
Japanese JIS G3521 SWB
German DIN 1.123
British BS 5216 NS 5216 HS

*Note: All material properties are provided for general reference purposes only. We recommend you to contact Optimum Spring during the material selection process.

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