Products:

Material
Nominal
Analysis
Minimum
Tensile
Strength
psi x 103
Modulus of
Elasticity
E
psi x 103
Design
Stress
% Minimum
Tensile
Modulus in
Torsion
G
psi x 103
Maximum
Temp.
ºF
Maximum
Temp.
ºC
Rockwell
Hardness
Method of Manufacture,
Chief Uses,
Special Properties
Music Wire
ASTM A 228
C .70 - 1.00%
Mn .20 - 60%
230-399
30
45
11.5
250
121
C41-60
Cold drawn. High and uniform tensile.
High quality springs and wire forms.
Hard Drawn
ASTM A 227
C .45 - 85%
Mn .60 - 1.30%
CLI 147-283
CLII 171-324
30
40
11.5
250
121
C31-52

Cold drawn.
Average stress applications.
Lower cost springs and wire forms.
High Tensile Hard Drawn
ASTM A 679
C .65 - 1.00%
Mn .20 - 1.30%
238-350
30
45
11.5
250
121
C41-60
Cold drawn.
Higher quality springs and wire forms.
Oil Tempered
ASTM A 229
C .55 - .85%
Mn .60 - 1.20%
CLI 165-293
CLII 191-324
30
45
11.5
250
121
C42-55
Cold drawn and heat treated before fabrication.
General purpose spring wire.
Carbon Valve
ASTM A 230
C .60 - .75%
Mn .60 - .90%
215-240
30
45
11.5
250
121
C45-49
Cold drawn and heat treated before fabrication.
Good surface condition and uniform tensile.
General. High-carbon spring steels are the most commonly used of all spring materials. Try to use these materials in preference to others because they are the least expensive, are readily available, easily worked, and most popular. These materials are not satisfactory for high or low temperatures or for shock or impact loading.