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17-4PH

17-4PH material for the United States grade, is the martensitic precipitation hardening stainless steel, equivalent to the Chinese grade: 0 Cr17Ni4Cu4Nb. 17-4PH added copper precipitation hardening steel grade. 17-4PH is used in the manufacture of shafts and turbine components.

 

Feed No.

chemical composition

OSF

Density

C

Cr

Ni

Cu

Nb

Si

Mn

S

P

Fe

FDC17-4PHA

≤0.07

15.5-17.5

3.0-5.0

3.0-5.0

0.15-0.45

≤ 1.00

≤ 1.00

≤0.03

≤0.045

Ball

1.190

≥ 7.60

FDC17-4PHB

≤0.07

15.5-17.5

3.0-5.0

3.0-5.0

0.15-0.45

≤ 1.00

≤ 1.00

≤0.03

≤0.045

Ball

1.167

≥ 7.60

FDC17-4PHK

≤0.07

15.5-17.5

3.0-5.0

3.0-5.0

0.15-0.45

≤ 1.00

≤ 1.00

≤0.03

≤0.045

Ball

1.185

≥ 7.60

FDC17-4PHF

≤0.07

15.5-17.5

3.0-5.0

3.0-5.0

0.15-0.45

≤ 1.00

≤ 1.00

≤0.03

≤0.045

Ball

1.190

≥ 7.60

FDC17-4PHT

≤0.07

15.5-17.5

3.0-5.0

3.0-5.0

0.15-0.45

≤ 1.00

≤ 1.00

≤0.03

≤0.045

Ball

1.175

≥ 7.60

FDC17-4PHW

≤0.07

15.5-17.5

3.0-5.0

3.0-5.0

0.15-0.45

≤ 1.00

≤ 1.00

≤0.03

≤0.045

Ball

1.167

≥ 7.60