Spring wire technical detail

Technical Resources

Central Wire offers technical expertise to customers across the globe. Drawing on our unique capabilities and one of the industry’s largest technical teams, our resources can be put to work for solving any spring wire problem that arises in your application. Whether you need an engineered solution in an extreme environment of a few adjustments to optimize peak performance, Central Wire UK will work to achieve the performance you need.

Below is a collection of spring wire technical detail to help with understanding the general performance properties available from the many spring wire alloys manufactured by Central Wire UK. Specific details include Tensile Strength, Environmental Performance, and Thermal Treatments. Take a moment to review the information as presented, and contact us should you wish to discuss any particular details. 

Stainless Spring Wire

Download the Spring Wire Technical Guide

Specific details include Tensile Strength, Environmental Performance, and Thermal Treatments. 

stainless steel spring wire
profiled wire manufacturer
Nickel Spring Wire

Download Detailed Properties of Select Alloys

Includes Modulus of Elasticity, Safe Working Temperatures, and comparisons of corrosion resistance and corrosion fatigue across Nickel Alloy and Stainless Steel Alloy Spring Wire.

Detailed Properties of Select Alloys

          
Modulus of ElasticityMaximum Safe Temp
MaterialTorsion 10′Tension 10′MagneticCorrosion FatigueT.P / T.S.**HighLowCorrosion Resiostance (general)Spring Temper Range (KSI)
M40010.010.0VariesGood450 F-320 FGood145/180
K-50010.010.0NoGood38/42500 F-423 FGood145/195
60011.011.0NoGood40/45750 F-423 FGood170/230
60111.511.5NoGoodGood120/205
62511.011.0NoExcellent700 F-423 FExcellent
718*11.011.0NoGood1200 F-423 FGood210/250
X75011.011.0NoGood40/451200 F-453 FGood190/230
80011.011.0NoGoodGood140/175
8059.09.0SlightGoodGood150/190
82510.010.0NoGoodGood
NS902*9.59.5SlightFairFair140/160
H C-27611.411.4NoExcellentExcellent
302/30411.028.0SlightFair40/45500 F-320 FGood190/360
31611.028.0NoGood45/50Good190/360
34711.028.5SlightFair45/50Fair190/310
20Cb11.028.0NoGoodGood
17-7 PH*11.029.0YesFair550 F-320 F230/365
TT-5010.520.0NoGoodGood165/234
41012.030.0YesPoor42/55500 FFair
43013.028.0YesPoor42/55Fair160/200
*Age Hardenable
**Approximate Ration of Torsional Proportional Limit to Ultimate Tensile Strength for Spring Wire
HASTELLOY is a registered trademark of Haynes Corp.
NS: Ni-Span-C H: Hastelloy TT: Tech-Tronic
 

spring wire tensile

Download Spring Wire Tensile Strength Detail

Compare Tensile Strengths across various diameters of common Nickel and Stainless Steel spring wire alloys.

Minimum Tensile Strength – Nickel Alloy Spring Wire

    
Diameter Range Inches (mm)Minimum Tensile Strength (psi)
Monel® 400Inconel® 600Monel® K500*
<0.028(0.71)165,000185,000165,000
0.0281(.071) – 0.057(1.45)160,000185,000165,000
0.0571(1.45) – 0.144(2.90)150,000175,000155,000
01441(2.90) – 0.229(5.82)140,000170,000155,000
0.2291(5.82) – 0.312(7.92)140,000165,000135,000
.3121(7.92) – 0.375(9.53)135,000160,000135,000
0.3751(9.53)-0.437(11.10)130,000155,000125,000
0.4371(11.10)-0.500(12.70)130,000155,000120,000
0.5001(12.70)-0.563(14.30)120,000140,000120,000
X750
<0.250(<6.36)190,000
0.250(6.35) – 0.625(15.88)160,000
After Heat TreatmentX750
0.012(0.30) – 0.250(6.35)220,000
0.2501(6.35) – 0.418(10.62)200,000
0.4181(10.62) – 0.625(15.88)180,000
*K-500 – For cold drawn, annealed and age hardened: all sizes: 130,000

Minimum Tensile Strength – Type 302/304 Spring Wire

  
Diameter Range Inches (mm)Tensile Range (psi)
<.009 (0.23)325,000
0.009 (0.23) – 0.012 (0.30)316,000 – 325,000
0.013 (0.33) – 0.016 (0.41308,000 – 314,000
0.017 (0.43) – 0.022 (0.56)296,000 – 306,000
0.023 (0.58) – 0.028 (0.71)289,000 – 292,000
0.029 (0.74) – 0.036 (0.91)280,000 – 285,000
0.037 (0.94) – 0.045 ( 1.14)272,000 – 280,000
0.046 (1.17) – 0.063 (1.60)258,000 – 267,000
0.064 (1.63) – 0.080 (2.03) 246,000 – 252,000
0.081 (2.39) – 0.094 (2.39)238,000 – 242,000
0.095 (2.41) – 0.120 (3.05)222,000 – 238,000
0.121 (3.07) – 0.148 (3.76)210,000 – 222,000
0.149 (3.78) – 0.162 (4.11200,000 – 205,000
0.163 (4.14) – 0.187 (4.75)194,000 – 198,000
0.188 (4.78) – 0.207 (5.26)188,000 – 194,000
0.208 (5.28) – 0.225 (5.72)184,000 – 188,000
0.226 (5.74) – 0.278 (7.06)174,000 – 182,000
0.279 (7.09) – 0.362 (9.19)150,000 – 161,000
.363 (9.22) – 0.500 (12.70)135,000 – 145,000
>0.501 (12.72)130,000

x750

Download Recommended Thermal Treatments

Review recommended stress equalizing and age hardening parameters of common Spring Wire alloys.

Recommended Thermal Treatments

      
Stress EqualizingAge Hardening
AlloyTemp (F)Time (hrs)Temp (F)Time (hrs)Maximum Safe Operating Temperature (F)
Monel® 400575-6501/2-1Not Possible450
Monel® K5005751/2-110004500
Inconel® 600800-9001/2-1Not Possible750
Inconel® 625Not RecommendedNot Possible700
X750 Spring Temper875312004700
X750 (>0.025″ diameter) w1 Temper (15% cold wor)Not Recommended1350161000
X750 (Annealed) Spring Temper (,0.025″ diameter)Not Recommended1350161200
X750 Spring TemperStress Relieved from Age HardeningSolution Treat: 2100
High Temp Age: 1550
Regular Age: 1300
2
24
20
1200
Inconel® 718 Spring TemperStress Relieved from Age Hardening1325
1150
8
8
1000
Inconel® 718
w1 Temper (15% cold wor)
Not Recommended1800
1320
1150 (Furnace Cool)
1
8
8
1200
Ni-Span C 9027501-1/21100-13504-5
Alloy 805 (Temperature Compensating)7501/2Not Possible
Alloy 8258001Not Possible
Alloy 20Cb-3Not Possible
302 Stainless Steel650-8501/2Not Possible500
316 Stainless Steel750-8501Not Possible600
17-7 PH Spring TemperStress Relieved from Age Hardening9001550
17-7 PH
(15% cold work)
Stress Relieved from Age Hardening10001550
PH 15-7 Mo Spring TemperStress Relieved from Age Hardening90016 (requires air cool)550

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