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Properties of Common Spring Materials For Spring Wire

 

High-Carbon Spring Wire

Material
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 Analysis

C - .70 - 1.00% Mn - .20 - 60%
C - .45- .85% Mn- .60-1.30%
C - .65 - .1.00% Mn - .60-1.30%
C - .55 - .85% MN - .60 -1.20%
C - .60 - .75% Mn - .60 - .90%

Minimum Tensile Strength

230-399
CLI 147-283 CLII 171-324
258-350 --
CLI 165-293 CLII 191-324
215-240

Modulus of Elasticity E psi x 10

30
30
30
30
30

Design Stress % Minimum Tensile

45
40
45
45
45

Modulus in Torsion

G psi x 106

11.5
11.5
11.5
11.5
11.5

Maximim Temp. F

250
250
250
250
250

Maximum Temp. C

121
121
121
121
121

Rockwell Hardness

C41-60
C31-52
C41-60
C42-55
C45-49

Method of Manufacture Chief Uses Special Properties

Cold drawn.High and uniform tensile.High quality springs and wire forms.
Cold drawn.Average stress applications.Lower cost springs and wire forms.
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.
General. 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.



 

Alloy Steel Wire

Stainless Steel Wire

Material

Chrome Vanadium ASTM A 231
Chome silicon ASTM A 401
AISI 302/304 ASTM A 313
AISI 316 ASTM A 313 (631)
17-7 PH ASTM A 313 (631)

Nominal Analysis

C- .48 - .53% Cr-.80-1.10% V - .15 min%
C-.51-.59% Cr-.60-.80% si-1.20-1.60%
Cr-17.0-19.0% Ni-8.0-10.0%
Cr-16.0-18.0% Ni-10.0-14.0% Mo-2.0-3.0%
Cr-16.0-18.0% Ni-6.5-7.5% Al-.75-1.5%

Minimum Tensile Strength

190-300
235-300
125-325
110-245
Cond CH 235-335

Modulus of Elasticy E

psi x 10

30
30
28
28
29.5

Design Stress % Minimum Tensile

45
45
30-40
40
45

Modulus in Torsion

G psi x 106

11.5
11.5
10
10
11

Maximum Temp.:F

425
475
550
550
650

Maximum Temp. C

218.5
246
288
288
343

Rockwell Hardness

C41-55
C48-55
C35-45
C35-45
C38-57

Method of Manufacture Chief Uses Special Propeterties

Cold drawn and heat treated before fabrication.Used for shock loads and moderately elevated temperature.
Cold drawn and heat treated before fabrication.Used for shock loads and moderately elevated temperature.
Cold drawn,general purpose,corrosion and heat resistant.Magnetic in spring temper.
Cold drawn,Heat resistant and betler corrosion resistance than 302.Magnetic in spring temper.
Cold drawn & precipitation hardened after fabrication.High strengh and general purpose corrosion resistance.Slightly magnetic in spring temper.
General.The alloy spring steels have a definite plac in the fueld of spring materials,particularly for conditions involving high stress and for applications where shock or impact loading occurs.Alloy spring steels also can withstand higher and lower temperatures than the annealed or pre not regularly stocked in a wide variety of sizes.
General.The use of stainless spring steels has increased considerably in recent years.Sevaral new compositions are now available to withstand corrosion.All of these materials can be used for high temperatures up to 650f.



Non-Ferrous Alloy Wire

Material
Phosphor Bronze A ASTM B 159
Beryllium Copper ASTM B 197
Monel 400 AMS 7233
Monel K 500 QQ-N-286
Nominal Analysis
Cu-94.0%-96.0% Sn-4.0-6.0%
Cu-98.0% Be-2.0%
Ni-66.0% Cu-31.5% C/fe
Ni-65.0% Cu-29.5% C/fe/A/Ti
Minimum Tensile Strength
105-145
150-230
145-180
160-200
Modulus of Elasticity E
psi x 10
15
18.5
26
26
Design Stress% Minimum Tensile
40
45
40
40
Moodulus in Torsion
G psi x 106
6.25
7.0
9.5
9.5
Maximum Temp. :F
200
400
450
550
Maximum Temp. C
93.8
204
232
288
Rockwell Hardness
B98-104
C35-42
C23-32
C23-35
Method of Manufacture Chief Uses Special Properties
Cold drawn.Good corrosion resistance and electrical conductivity.
Cold drawn and may be mill hardened before fabrication.Good corrosion resistance and electrical conductivity.High physicals.
Cold drawn,Good corrosion resistance at moderately elevated temperature.
Excelient corrosion resistance at moderately elevated temperature
General. Copper-base alloys are important spring materials because of their good electrical properties combined with their excellent resistance to corrosion. Although these materials are more expensive than the high-carbon and the alloy steels,they nevertheless are frequently used in electrical components and in subzero temperatures. All copper-base alloys are drawn to the American wire gauge (same as Brown & Sharpe gauge) and are nonmagnetic.


High-Temperature Alloy Wire

Material
A 286 Alloy
Inconel 600 QQ-W-390
Inconel 718
Inconel X-750 AMS 5698,5699
Nominal Analysis
Ni -- 26.0% Cr -- 15.0% Fe--53.0%
Ni -- 76.0% Cr -- 15.8% Fe -- 7.2%
Ni -- 52.5% Cr -- 18.6% Fe -- 18.5%
Inconel X-750 Ams 5698.5699
Minimum Tensile Strength
160-200
170-230
210-2500
No.IT 155 min.Spg.T 190-230
Modulus of Elasticity E
psi x 10
29
31
29
31
Design Stress% Minimum Tensile
35
40
40
40
Moodulus in Torsion
G psi x 106
10.4
11.0
11.2
12
Maximum Temp. :F
950
700
1100
750-1100
Maximum Temp. C
510
371
593
399-593
Rockwell Hardness
C35-42
C35-45
C45-50
C34-39 C42-48
Method of Manufacture Chief Uses Special Properties
Cold drawn.and precipitation hardened after fabrication.good corrosion resistance at elevated temperature..
Cold drawn.Good corrosion resistance at elevated temperature.
Cold drawn and preipittion hardened after. fabrication.Good corrosion resistance at elevated temperature.
Cold drawn and precipitation hardened after fabrication. Good corrosion resistance at elevated temperature.
General. Nickel-based alloys are especially useful spring materials to combat corrosion and to withstand both elevated and below-zero temperature application. Their nonmagnetic characteristic is important for such devices as gyroscopes,chronoscopes, and indicating instruments. These materials have high electrical resistance and should not be used for conductors of electrical current.

Acxess Spring, 2225 E. Cooley Dr. Colton, CA 92324

Ph: (951)276-2777 Fx: (951)240-3334 Email: sales@acxesspring.com