Suhm Spring Works - Materials Properties

                                                                                               

Material

Material Properties

Maximum Working Temp.

 Ultimate Tensile Range (ksi min)

Modulus of Elasticity, psi 106

Approx. Design % of Ultimate Tensile (torsional)

Common Sizes (inches)

Oil Tempered Wire, Class I

 ASTM A229  UNS K07001 & G10650

 

Cold drawn.  All purpose spring material.  Heat treated before fabrication.  Susceptible to hydrogen embrittlement when plated.

250°F

323/125 (class I)

(E) 30

(G) 11.5

45%

.032" to .625"

 

 SIZE CHART

Wire

Dia., in.

 

Wire

Dia., in.

 

Wire

Dia., in.

 

Wire

Dia., in.

 

Wire

Dia., in.

 

Wire

Dia., in.

 

Wire

Dia., in.

  

Wire

Dia., in.
.032

.067

 .099 .135 .180

.250

.306

.468
.035

.072

.100

.148

 .187 .262

.312

.500
.040

.080

.105

.156

.192

 .263 .331

.531
.041

.086

.113

.162

.207

 .281

.343

.562

.047

 .087

.120

.170

.225

 .283

.362

.625

.051

 .091

.125

.172

 .235 .295 .406  
.058 .093 .128 .177 .243 .302 .437  

 

 TENSILE STRENGTH CHART

Diameter, in.A

 Tensile Strength, ksi   Diameter, in.A

Tensile Strength, ksi
Class I Class II Class I Class II
min    max min    max min   max min   max
.020 293    323 324    354 .135 215    240 241    266
.023 289    319 320    350 .148 210    235 236    261
.026 286    316 317    347 .162 205    230 231    256
.029 283    313 314    344 .177 200    225 226    251
.032 280    310 311    335 .192 195    220 221    246
.035 274    304 305    335 .207 190    215 216    241
.041 266    296 297    327 .225 188    213 214    239
.048 259    289 290    320 .244 187    212 213    238
.054 253    283 284    314 .250 185    210 211    236
.062 247    277 278    308 .312 183    208 209    234
.072 241    271 272    302 .375 180    205 206    231
.080 235    265 266    296 .438 175    200 201    226
.092 230    260 261    291 .500 170    195 196    221
.106 225    255 256    286 .562 165    190

191    216
.120 220    250 251    281 .625 165    190 191    216

 A Tensile strength values for intermediate diameters may be interpolated.

 

These data are provided as a reference guide only and are not intended for design purposes.  Strength values and sizes are subject to change.  Please check with a Suhm Spring representative for confirmation.

 

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