17-4h（630stainless steel ）steel coil and steel bar

17-4PH stainless steel (630 stainless steel)

17-4PH stainless steel is a martensitic precipitation hardening stainless steel, equivalent to the Chinese brand: 0Cr17Ni4Cu4Nb. 17-4PH precipitation hardening steel with copper added. 17-4PH is used to manufacture shafts and steam turbine parts.
Chinese name 17-4PH stainless steel standard AISI, ASTM type number 17-4PH (SUS630) UNS number S17400
●17-4PH characteristics and applications:
●17-4PH chemical composition①:

●17-4PH mechanical properties:
Tensile strength σb (MPa): aging at 480°C, ≥1310; aging at 550°C, ≥1060; aging at 580°C, ≥1000; aging at 620°C, ≥930
Conditional yield strength σ0.2 (MPa): aging at 480°C, ≥1180; aging at 550°C, ≥1000; aging at 580°C, ≥865; aging at 620°C, ≥725
Elongation δ5 (%): aging at 480°C, ≥10; aging at 550°C, ≥12; aging at 580°C, ≥13; aging at 620°C, ≥16
Reduction of area ψ (%): aging at 480℃, ≥40; aging at 550℃, ≥45; aging at 580℃, ≥45; aging at 620℃, ≥50
Hardness: solid solution, ≤363HB and ≤38HRC; aging at 480℃, ≥375HB and ≥40HRC; aging at 550℃, ≥331HB and ≥35HRC; aging at 580℃, ≥302HB and ≥31HRC; aging at 620℃, ≥277HB and ≥28HRC
●17-4PH heat treatment specification and metallographic structure:
Heat treatment specifications: 1) rapid cooling at 1020～1060℃; 2) aging at 480℃, after solution treatment, air cooling at 470～490℃; 3) aging at 550℃, after solution treatment, air cooling at 540～560℃; 4) Aging at 580℃, after solution treatment, air cooling at 570～590℃; 5) Aging at 620℃, after solution treatment, air cooling at 610～630℃.
Metallographic structure: The structure is characterized by precipitation hardening.
●17-4PH delivery status: generally delivered in the heat treatment state, the type of heat treatment is indicated in the contract; if it is not specified, it will be delivered in the non-heat treatment state.
Note: ①A single value is the highest value unless otherwise specified; ②When used in certain pipe making processes, the nickel content of some types of austenitic stainless steel must be slightly higher than the value shown in the table; ③ Random; ④The highest TA content is 0.10%; ⑤The highest content is 0.75%; ⑥The highest content is 0.70%
17-4PH alloy is precipitation, hardening, martensitic stainless steel.
17-4PH alloy is a precipitation, hardening, martensitic stainless steel composed of copper and niobium/columb.
This grade has high strength, hardness (up to 300°C/572°F) and corrosion resistance.
After heat treatment, the mechanical properties of the product are more perfect, and can reach a compressive strength of up to 1100-1300 mpa (160-190 ksi).
This grade cannot be used at temperatures higher than 300°C (572°F) or very low temperatures. It has good corrosion resistance to the atmosphere and diluted acids or salts. Its corrosion resistance is the same as 304 and 430.
17-4PH application field:
· Offshore platforms, helicopter decks, other platforms
· food industry
· Pulp and Paper Industry
· Aerospace (turbine blades)
· machinery parts
· Nuclear Waste Barrel

Torich Interational Limited is a professional manufacturer and exporter of steel pipes materials. It is an international marketing and sales company specialized in steel tubes, which holds the factories of Seamless Steel Tubes with Carbon and Alloy Steel Grade, Welded Precision Steel Tubes，DOM Steel Tubes, Seamless & Welded Stainless Steel Tubes with Nickel and Alloy Steel Grade.

Our steel pipes cover the following ranges:
Seamless Precision Steel Pipes
Welded Precision Steel Pipes, with DOM production
Seamless Heat Exchanger Steel Pipe
Seamless Boiler Steel Pipes
Seamless Structural Steel Pipes
Seamless Mechanical Steel Pipes
Seamless Alloy Steel Tubes & Pipes
Seamless Stainless Steel tubes
Welded Stainless Steel Tubes
Seamless Stainless Steel Tubes & Pipes
Welded Stainless Steel Tubes & Pipes
Seamless Carbon Steel Tubes & Pipes
Nickel Alloy Steel Tubes & Pipes

Steel Grade:
Carbon Steel Grade:
ST35.8, ST37.0, ST44, ST52;
E155, E195, E215, E235, E275, E355;
195GH, P235GH, P265GH, P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, P265TR2;
SAE1010, SAE1020, SAE1026, SAE1035, SAE1045;
Carbon steel tube: SA178, A179, A192, A210, SA213, SA214, etc.

Alloy Steel Grade:
T2, T5, T9, T11, T12, T17, T21, T22, T91,T92, 15Mo3,16Mo3, 13CrMo44;
SAE4130, SAE4140, 40Cr, 40Cr4, 10CrMo910, 12CrMo910, 11CrMo910,
25CrMo4, 35CrMo, 35CrMo4, 42CrMo4, 34CrMo4, 20MnV, 20MnV6,20CrMn;
Carbon steel tube:A179,A192,A210,DIN17175,etc.