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Home » Spring Steel » Product introduction

250A58

  • Numbers: 20101221019
  • Model: BS970
  • Producers: China
  • Update time: 2010.12.21
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Product Description:

250A58 is a silicon mangenese spring steel, commonly supplied in the as rolled contition. As a spring steel grade 250A58 is suitable for oil hardening and tempering.

 

 

TYPICAL ANALYSIS

250A58 

 

C.

Si.

Mn.

S.

P.

0.58%

1.75%

0.75%

0.05%

0.05%

 

 

 

 

Forging:
Forge at 1150°C.

Annealing:
Slow furnace cool from 840°/900°C.

Hardening:
Pre heat slowly to 650/700
°C and thoroughly soakthe 250A58 component. Continue heating to the final hardening temperature of 870/930°C and allow the component to be heated through. Quench in oil.

Tempering:
Temper immediately after quenching whilst the 250A58 tools are still hand warm. Re-heat to the tempering temperature, soak for one hour per  25 millimetre of total thickness, 2 hours minimum, then cool in air. For most applications tempering will be between 400
°/550°C.

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