For over 50 years, M & S Spring Company has manufactured oil tempered springs in various shapes including torsion, compression, and extension springs. Oil tempered wire is cold drawn, as well as heat treated before fabrication. Oil tempered springs have good shock and impact resistances, along with good fatigue properties and are also economical and ideal for cyclical properties.. M & S Spring’s oil tempered springs meet ASTM A229 standards
Oil Tempered (O.T.M.B) Wire Spring Types
M & S Spring manufactures several types of oil tempered springs including:
Oil Tempered Spring Properties
| Nominal Chemistry | C 0.55-0.85% Mn 0.60%-1.20% |
| Minimum Tensile Strength psi (MPa) |
CLI 165-293 [1138-2020] CLII 191-324 [1317-2234] |
| Modulus of Elasticity psi (MPa) |
30 (207) |
| Design Stress % Minimum Tensile | 45 |
| Modulus in Torsion psi (MPa)/td> |
11.5 (79.3) |
| Maximum Operating Temperature | 250°F/121°C |
| Rockwell Hardness | C42-55 |
| Specifications | ASTM A 229 |