|
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. |
