A designer and manufacturer of precision springs since 1939, Diamond Wire Spring uses AISI 302/304, AISI 316, 316L and 17-7 PH stainless steels for compression, extension, torsion springs, and wire forms.
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Material
AISI 302/304
AISI 316
17-7 PH
ASTM
A 313
A 313
A 313 (631)
Nominal Analysis
Cr -- 17.0 - 19.0%
Cr -- 16.0 - 18.0%
Cr -- 16.0 - 18.0%
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Ni -- 8.0 - 10.0%
Ni -- 10.0 - 14.0%
Ni -- 6.5 - 7.5%
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Mo -- 2.0 - 3.0%
Al -- .75 - 1.5%
Minimum Tensile Strength
125-325
110-245
Cond CH
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235-335
Modulus of Elasticity E
28
28
29.5
psi x 103
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Design Stress % Minimum
30-40
40
45
Tensile
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Modulus in Torsion
10
10
11
G psi x 106
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Maximum Temp. F
550
550
650
Maximum Temp. C
288
288
343
Rockwell Hardness
C35-45
C35-45
C38-57
Method of Manufacture
Cold drawn, general purpose, corrosion and heat resistant. Magnetic in spring temper.
Cold drawn. Heat resistant and better corrosion resistance than 302. Magnetic in spring temper. Slightly magnetic in spring temper.
Cold drawn & precipitation hardened after fabrication. High strength and general purpose corrosion resistance
Material
A designer and manufacturer of precision springs since 1939, Diamond Wire Spring uses AISI 301/304, AISI 316, and 17-7 PH stainless steels for compression, extension, torsion springs, and wire forms.
1
AISI 302/304
AISI 302/304 stainless steels are used in various industrial and consumer applications due to their excellent corrosion resistance, high flexibility, and good strength properties.
2
AISI 316
AISI 316 stainless steel is an austenitic stainless steel alloy that is highly corrosion resistant due to the addition of molybdenum (Mo) in its composition.
3
17-7 PH
17-7 PH stainless steel, also known as 17-7 precipitation-hardening stainless steel, is a semi-austenitic stainless steel alloy notable for its combination of high strength, excellent corrosion resistance, and good formability.
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