high strength stainless steel bar 17-4PH ROUND BARS

  • high strength stainless steel bar
  • high strength stainless steel bar
Item Code:17-4PH ROUND BARS Features:
  • Description

● Introduce: is Martensite deposition hardening stainless steel,Chinese Grade Is 0Cr17Ni4Cu4Nb。

● Dimensions:Dia8mm-Dia130mm

● Chemical composition

C:≤0.07

Mn:≤1.00

Si:≤1.00Cr:15.5~17.5

Ni:3.0~5.0

P:≤0.04

S:≤0.03

Cu:3.0~5.0

Nb+Ta:0.15~0.45

 mechanical properties Tensile Strength:σb (MPa):

480℃ ageing≥1310; 

550℃ ageing≥1060; 

580℃ ageing ≥1000; 

620℃ ageing,≥930

● Offset yield strength:

σ0.2 (MPa):480℃ ageing≥1180;550℃ ageing,≥1000;580℃ ageing≥865;

620℃ ageing,≥725

● Elongationδ5 (%):

480℃ ageing≥10;550℃ ageing,≥12;580℃ ageing≥13;620℃ ageing≥16

● Reduction of area ψ (%):

480℃ ageing,≥40;550℃ ageing,≥45;

580℃ ageing ≥45; 620℃ ageing,≥50

 Hardness: Solution,≤363HB和≤38HRC;

480℃: ageing≥375HB or ≥40HRC; 

550℃:ageing≥331HBor≥35HRC;

580℃ageing≥302HB or ≥31HRC;

620℃ageing,≥277HB or ≥28HRC

Features and applications17-4PH:Precipitate hardened steel type with copper。It is used in manufacturing shaft and turbine parts.

 

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