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Contact Us

 

 

 

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Reach us:
51, Kapol Niwas,
1st Carpenter Street,
Near C.P Tank Road,
Mumbai - 400 004
India.


Tel : +91-22-6743 6481
        +91-22-6743 6487

Fax No: +91-22-6659 5425

Email : info@chandansteel.co.in

 

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17-4PH
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Stainless Steel Specifications

 

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)

   

 Condition:

       

 

 

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

Corrosion Resistance
17-4PH stainless steel has excellent corrosion resistance. Corrosion tests and service experience have shown that in all aged conditions it is superior to standard hardenable stainless grades such as 420, 431 and 410. Its corrosion resistance is comparable to grade 304 Stainless.

Welding
Arc and resistance welding processes used on standard grades of stainless steel are applicable to 17-4PH stainless steel. The low hardness enables sections, up to 100mm, to be welded without requiring pre heating.

Fabrication
17-4PH Condition is suitable for limited cold forming, H1100, H1150 and overaged conditions are more suitable when severe cold forming is required.

Machining
17-4PH Condition has machining characteristics similar to stainless grades 302, 304 and 410. The high hardness and strength in Condition H900 is the most difficult to machine and the material should be machined at 60% of the rate which is used for Condition A.

Nitriding
To increase the resistance to surface wear, with a slight decrease in corrosion resistance, 17-4PH stainless steel can be nitrided. An approximate hardness of 64/67HRc can be achieved, with a surface hardness depth of up to 0.15mm when nitrided at 540°C, while still maintaining a high core strength.

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