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PH Stainless Steel

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China Manufacturer Special Steel Customized High Precision ASME SA182 SS 17-4PH Forging Bar

Material:17-4 PH Duplex Stainless Steel
Type: Flange
Fetures: Excellent resistance to corrosion
Provide toughness in both base metals and welds.
Well suited to applications that require ease of fabrication and then the addition of strength/hardness for improved reliability.

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Model: 17-4PH


What is the 17-4 Ph Stainless Steel:

Type 17-4 PH stainless steel is the most widely used of all of the precipitation-hardening stainless steels. Its valuable combination of properties gives designers opportunities to add reliability to their products while simplifying fabrication and often reducing costs. Type 17-4 PH is a martensitic precipitation-hardening stainless steel that provides an outstanding combination of high strength, good corrosion resistance, and good mechanical properties at temperatures up to 600°F (316°C). Its unique combination of properties make this alloy an effective solution to many design and production problems.

17-4PH Bar® forgings exhibit very low corrosion rates in high velocity seawater. Combined with their high strength, this makes them the material of choice for marine applications and other similar environments. 17-4PH forgings are also highly resistant to sour gas atmospheres.

17-4PH Forged Round Bar Specialfication:


Diameter Of Alloy bar

Hot Rolled: Φ8-38mm
Forging: Φ38-350mm
Cold Rolled: ≤50mm
  • ASME: SA564, SA693, SA705, Type 630

  • AMS: 5604, 5622, 5643, 5825

  • UNS: S17400

  • W. Nr./EN: 1.4548

LengthAs Required
SurfaceBlack or Bright
Packagewooden boxes package,pvc package, and other package
Manufacture TechnologyHot Rolled ,Forging , Cold Rolled
Common Trade Names
 SAE Type 630 stainless steel17-4
 UNS 17400 

Characteristics of 17-4PH Duplex:

17-4 can be heat treated to high levels of strength and hardness, and features corrosion resistance[1] and machinability[2] comparable to austenitic 304 stainless. Being martensitic, 17-4 is magnetic.

17-4 is capable of being hardened up to approximately 44 Rc when heat treated to condition H900.[1]

Overaging (aging beyond the peak strength condition) improves resistance to stress corrosion cracking

Metallurgical Structure
17-4 alloy has a face-centered cubic structure. In the age-hardened Condition a Ni3Al phase is formed with similar structure.

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