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  • Steel Pipe
Super Duplex Stainless Steel Flanges | Stainless Steel Pipe Fittings | Duplex Stainless Steel Pipes | Stainless Steel Bars
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17-4PH

17-4PH angle bars, 17-4PH flanges, Pipe Fitting, Steel Pipe, Heat Exchanger and Reducer, Gasket, Tee, Pipe Fitting, Tube Plate, have all specifications. With many yeas production experience, strict control 17-4PH chemical composition and 17-4PH mechanical properties.

Production specification
Data center describes many of the common steel models, we can not determine the company's warehouse has all types of steel products inventory or raw materials.

Angle bar: 1mm to 1300mm
Steel Pipe: 1 - 1300mm, also can be customed.
Pipe fitting Size: 1/8 inch - 80 inch (DN6 - DN2000)
Flange Size: DN6 - DN2000
Lenth: Any lenth based on the customer's requirement.

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 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

Corrosion Resistance
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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