Optimum Spring manufactures extension, torsion and compression springs with Comparison of High Carbon - Spring Wire Properties
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Comparison of High Carbon - 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.

convert to metric units
Music Wire
ASTM A 228 		Hard Drawn
ASTM A 227 		High Tensile
Hard Drawn
ASTM A 679 		Oil Tempered
ASTM A 229 		Carbon Valve
ASTM A 230
Nominal Chemistry
C0.70-1.00%
Mn0.20-60%
C0.45-0.85%
Mn0.60-1.30%
C0.65-1.00%
Mn0.20-1.30%
C0.55-0.85%
Mn0.60-1.20%
C0.60-0.75%
Mn0.60-0.90%
Minimum Tensile Strength
psi x 103 		230-399 CLI 147-283
CLII 171-324 		238-350 CLI 165-293
CLII 191-324 		215-240
E - Modulus of Elasticity
psi x 106 		30 30 30 30 30
Design Stress % Minimum Tensile 45 40 45 45 45
G - Modulus in Torsion
psi x 106 		11.5 11.5 11.5 11.5 11.5
Maximum Operating Temperature
°F 		250 250 250 250 250
Rockwell Hardness C41-60 C31-52 C41-60 C42-55 C45-49
Density
lb/in3 		0.284 0.284 0.284 0.284 0.284
Shear Modulus
c GPa
Method of Manufacture
Chief Uses
Special Properties 		Music Wire is cold drawn, and it has a high and uniform tensile. Music Wire is the toughest and most widely used of all spring materials for small springs. It has the highest tensile strength and can withstand higher stresses under repeated loading than any other spring material. 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. Cold drawn. Higher quality springs and wire forms. Cold drawn and heat treated before fabrication, General purpose spring wire. Cold drawn and heat treated before fabrication. Suitable for cyclic applications.
Equivalent or Common Trade Names 228 Music Wire
Piano wire
ASTM A228
ASTM A29
ASTM A682
AISI 1086
AMS 5112
QQ-W-470
UNS K08500
UNS G10860
SAE J403
SAE J412
SAE J414e
Japanese JIS G3522 SWP-A G3522 SWP-B
German DIN 1.1269
British BS 1408 5216 5201
 		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

ASTM A229
OT
Oil Tempered Carbon Steel
UNS K07001
UNS G10650
AISI 1065
QQ-W-428 Type I
QQ-W-474
SAE J316T
GM61M
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