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Description

USA AISI 17-4PH Stainless Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Stainless Steel: 17-4PH
Category Type Steel Grade Standard Country Application
Steel GradesStainless Steel 17-4PH AISI USA
ASTM 5140
AISI 201
AISI 202
00Cr12
0Cr13Al
1Cr21Ni5Ti
00Cr18Ni5Mo3Si2
1Cr18Ni11SiA1Ti
0Cr26Ni5Mo2
410CB

Chemical composition(mass fraction)(wt.%) of the 17-4PH

TYPICAL ANALYSIS

 

         

C.

Mn.

P.

S.

Si.

Cr.

Ni.

Cu.

Nb.+Ta..

0.07%
max.

1.00%
max.

0.04%
max.

0.03%
max.

1.00%
max.

15.00-
17.50%

3.00-
5.00%

3.00-
5.00%

0.15-
0.45%

Solution Treatments.
As supplied 17-4PH is usuall in the solution treated condition (Condition A). It can be heat treated at different temperatures to offer a wide range of properties. (We also hold stock in H1150+H1150, and annealed block).

Condition 

  Hardening 

  Hardening 

Type of Cooling 

Hardness

 

Temperature

Time

 

  Brinell 

  Rockwell C 

A

1038°C

1/2

  Oil/Air (to below 32°C)  

  363 max. 

39 max.

H900

480°C

1

Air

420

44

H925

495°C

4

Air

409

42

H1025

550°C

4

Air 

352

38

H1075

580°C

4

Air

341

36

H1100

595°C

4

Air

332

35

H1150

621°C

4

Air

311

33

 
 H1150+H1150 


760°C

760°C


4
followed by
4


Air

Air




302




33


H1150-M


760°C

620°C


2
followed by
4


Air

Air




277




27

Typical Mechanical Properties (longitudinal)

 

A

H900

H925

H1025

H1075

H1100

H1150

    H1150+  
H1150

  H1150M  
 

Tensile Strength
N/mm2

 1034  

   1380   

    1310    

     1170   

    1140   

    1035   

    1000   

  965 

860

0.2% YS
N/mm2

760

1275

1200

1140

1035

930

860

760

585

Reduction of Area     
%

30-60

50

54

56

58

58

60

60

68

Elongation
%

6-15

14

14

15

16

17

19

20

22

Charpy Impact
J

-

20

34

47

54

61

68

108

135

.

Mechanical Properties of steel grade 17-4PH

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
748 (≥) 443 (≥) 12 21 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical Properties of steel grade 17-4PH

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
12 - -     0.32 -  
911 154 - 22.3 431   -  
137 - 41 41.2   123 134

Heat Treatment of steel grade 17-4PH

Heat treated : 1763°C - 1565°C

Technological Curves of steel grade 17-4PH

Cross Reference Table (Equivalent Grade) of 17-4PH

Grade Standard Country Application
17-4PH USA Martensitic special steel
17-4PH USA Martensitic special steel

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