Alloy 17-4PH

Alloy 17-4PH

Model No.:

UNS S17400;AISI 630,17-4PH; SUS630;W.Nr.1.4542

Introduction:

Available Shapes: Bar,Pipe,Wire,Strip,Plate,Fasteners,fittings

Product Detail

Product Tags

Alloy 17-4PH  is a precipitation hardening martensitic stainless steel with Cu and Nb/Cb additions. The grade combines high strength, hardness (up to 300°C / 572°F) and corrosion resistance, combining high strength and post heat treatment hardnesswith excellent corrosion resistance that, in tests, proved superior to standard grades such as 420, 431 and 410. In fact, the corrosion resistance of 17-4PH is comparable with that of Grade 304.Mechanical properties can be optimized with heat treatment. Very high yield strength up to 1100-1300 MPa (160-190 ksi) can be achieved. The grade should not be used at temperatures above 300°C (572°F) or at very low temperatures. It has adequate resistance to atmospheric corrosion or in diluted acids or salts where its corrosion resistance is equivalent to grade 304 or430. chromium-copper stainless steel standardised as UNS S17400, 17-4PH is highly resistant to stress corrosion, has good machinability, short-term, low temperature heat treatments that minimise warpage and scaling, and is considered to be more cost effective than many high nickel non-ferrous alloys.

Alloy 17-4PH Trade Name: UNS S17400;AISI 630,17-4PH; SUS630;W.Nr.1.4542;

Alloy 17-4PH Chemical composition:

Alloy

%

Ni

Cr

Fe

C

Mn

Si

S

Cu

Nb

P

17-4PH

Min.

3.0

15.5

 balance





3.0

0.15


Max.

5.0

17.5

0.07

1.0

1

0.03

5.0

0.45

0.035

Alloy 17-4PH Physical properties:

Density

7.78 g/cm3

Melting point

1400-1440 ℃

Alloy 17-4PH mechanical properties in the room temperature:

Status

Tensile strength
Rm N/mm²

Yield strength
Rp0.2 N/mm²

Elongation
A5 %

HRC(HBS)

480℃ Aging

≥1310

≥1180

≥10

≥40

550℃ Aging

≥1060

≥1000

≥12

≥35

580℃ Aging

≥1000

≥865

≥13

≥31

620℃ Aging

≥930

≥325

≥16

≥28 

Alloy 17-4PH Specificaiton:

RodWireFrogingPipeSheetStrip

     

     AMS 5604, AMS 5643, AMS 5825, ASME SA 564, ASME SA 693, ASME SA 705,

     ASME Type 630,ASTM A 564, ASTM A 693, ASTM A 705, ASTM Type 630,

     Condition A – H1150,ISO 15156-3,NACE MR0175

         

Alloy 17-4PH Applications Fileds:                    

17-4PH, its main use is in aerospace and other high technology industries such as offshore, in gears, valves, turbine blades, nuclear waste casks, moulding dies and shafts, as well as having been tested in the petrochemical, petroleum, paper, dairy and food processing industries, and in such applications as boat shafting. The unique combination of properties within 17-4PH makes this alloy an effective solution to many design and production problems

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