We are JIS G4303 SUS630 Stainless welded pipe,SUS 630 stainless material supplier.

SUS630 manufacture in China,SUS630 stainless steel plate,SUS630 flat bar,SUS630 round bar, SUS630 seamless tube,SUS630 welded pipe,SUS630 Square tube,SUS630 rectangular tube,SUS630 machined parts.

 

Ryin stainless factory produce and export JIS G4303 SUS630 Stainless welded pipe,SUS 630 Stainless steel plates,SUS630 forge pieces,SUS630 machined parts,SUS630 Flat bar.

What is SUS630 Stainless steel grade?

 

SUS630 alloy is a stainless steel with precipitation, quenching water, martensite, and this grade has high strength, hardness and corrosion resistance.

After heat treatment, the mechanical properties of the product are more perfect, and it can reach compressive strength up to 1100-1300 mpa (160-190 ksi).

 

SUS630 is martensitic precipitation hardening stainless steel, Chinese grade 0Cr17Ni4Cu4Nb.

It has high strength, high hardness, good welding performance and corrosion resistance.

It has been widely used in valves, shafts and chemical fiber industries and high-strength parts with certain corrosion resistance requirements.

SAE Grade is 17-4PH.

 

SUS630 Chemical composition for SUS630 welded pipe

 

SAE designation	UNS designation	Cr	Ni	C	Mn	Si	P	S	%N	Other
Martensitic precipitation hardening  (%)
630	S17400	15-17	3-5	0.07	1	1	0.04	0.03	–	Cu 3-5, Ta 0.15-0.45

 

SUS630 Material properties

delivery status

 

Generally, it is delivered in the state of heat treatment and the type of heat treatment is indicated in the contract; if not specified, it is delivered in the state of no heat treatment.

 

SUS630 alloy is precipitation, quenched water, martensite stainless steel, and this grade has high strength, hardness and corrosion resistance.

After heat treatment, the mechanical properties of the product are more perfect, and it can reach a compressive strength of up to 1100-1300 mpa (160-190 ksi).

This grade cannot be used at temperatures above 300 ° C (570F) or at 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.

 

Mechanical properties

Tensile strength σb (MPa): 480 ℃ aging, ≥1310; 550 ℃ aging, ≥1060; 580 ℃ aging, ≥1000; 620 ℃ aging, ≥930

Conditional yield strength σ0.2 (MPa): aging at 480 ℃, ≥1180,aging at 550 ℃, ≥1000, aging at 580 ℃, ≥865,aging at 620 ℃, ≥725.

Elongation δ5 (%):

aging at 480 ℃, ≥10,aging at 550 ℃, ≥12,aging at 580 ℃, ≥13;,aging at 620 ℃, ≥16.

Section shrinkage ψ (%):

aging at 480 ℃, ≥40,aging at 550 ℃, ≥45,aging at 580 ℃, ≥45,aging at 620 ℃, ≥50.

SUS630 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.

 

 

Heat treatment specifications:

1) Rapid solution 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.

 

Heat treatment status

Generally, it is delivered in the state of heat treatment and the type of heat treatment is indicated in the contract; if not specified, it is delivered in the state of no heat treatment.

 

SUS630 Equivalent Grade(%)

Standard	Grade	c	Si	Mn	P	S	Ni	Cr	Mo	Cu	Nb
GB	0Cr17Ni4Cu4Nb	≤0.07	≤1.00	≤1.00	≤0.04	≤0.030	3.00-5.00	15.5-17.5	–	3.00-5.00	0.15-0.45
ASTM	ASTM S17400	≤0.07	≤1.00	≤1.00	≤0.04	≤0.030	3.00-5.00	15.5-17.5	–	3.00-5.00	0.15-0.45
JIS	SUS630	≤0.07	≤1.00	≤1.00	≤0.04	≤0.030	3.00-5.00	15.5-17.5	–	3.00-5.00	0.15-0.45
EN	X5CrNiCuNb16-4	≤0.08	≤1.00	≤1.00	≤0.045	≤0.030	3.0-5.0	15.0-17.0		3.0-5.0	0.15-0.45

 

 

JIS G4303 SUS630 Stainless applications:

Offshore platforms, helicopter decks, other platforms Food industry Pulp and paper industry Aerospace (turbine blades) Mechanical components Nuclear waste barrels.

 

 

 

Our factory is specialized in producing and exporting JIS G4303 SUS630, If you have requirement for JIS G4303 SUS630 stainless steel plate, SUS 630 round bar, SUS 630 seamless pipe and SUS630 stainless welded pipes, please feel free to contact us.

 

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