Suhm Spring Works - Materials Properties

                                                                                               

Material

Material Properties

Maximum Working Temp.

 Ultimate Tensile Range,

ksi

Modulus of Elasticity,
psi 106

Approx. Design % of Ultimate Tensile (torsional)

Common Sizes,
in

MP35N Spring Tempered Wire

AMS 5844

UNS R30035

Cold drawn, age hardened.  High strength. High modulus value and corrosion resistance. Great choice for severe spring applications.  Good for applications involving the presence of Hydrogen Sulfide.

600°F

330/230

(E) 34

(G) 11.74

45%

.005" to .750"

 

 SIZE CHART

Wire Diameter, in

.005

.017

.035

.058

.120

.177

.283

.562

.007

.018

.041

.062

.125

.187

.312

.625

.008

.021

.042

.072

.135

.192

.343

.750*

.009

.022

.044

.080

.142

.207

.375

  

.010

.024

.045

.093

.148

.218

.406

  

.012

.025

.048

.100

.156

.225

.437

  

.014

.031

.050

.105

.162

.243

.468

  

.015

.032

.054

.114

.172

.250

.500

  

 * Larger sizes available.

 

SS-MP35N

Suhm Coil Spring Works Wire Specification for MP35N

Suhm Spring Specification

Heat Treat

Notes

SS-MP35N

1200°F Min. / 4 Hrs. Min.

Must meet and be certified to AMS-5844A Chemicals Only. Physical Properties are to meet SS-MP35N.

Solution Heat Treat and Original Mill Required NACE MR-01-75-94. (HRC 55.0 Max)

 

Physical Properties for SS-MP35N after Drawn and Aged

Sizes

Minimum Tensile Strength, ksi

Minimum Yield,
ksi

Minimum Elongation, %

Minimum Reduction of Area, %

HRC

.001 - .005

300

280

1.0

Report

40 - 55

.006 - .100

290

280

4

20

40 - 55

.101 - .170

280

270

4

20

40 - 55

.171 - .250

260

240

5

20

40 - 55

.251 - .437

240

230

6

20

40 - 55

.438 - Over

230

220

8

20

40 - 55

 

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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