ASTM 631 stainless steel

ASTM 631 stainless steel

Standard: ASME, ASTM, EN, UNS, GB, DIN, JIS Certification: ISO, CE, ROHS Payment Terms: T/T, L/C, Paypal, Western Union

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Product Details

631 Stainless Steel Chemical Composition

Ni

Cr

Cu

Al

C

Si

Mn

S

P

6.50~7.75

16.00~18.00

≤0.50

0.75~1.50

≤0.09

≤1.00

≤1.00

≤0.030

≤0.035


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Dura 17-7 PH EN 1.4568 ASTM TYPE 631 stainless steel is half austenitic precipitation-hardening stainless steel, is a kind of  unstable austenitic stainless steel, the steel solid solution state, at room  temperature for austenitic organization.

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After cold  working, cold treatment, or heated to 750 degrees to adjust processing,  austenite transformation martensite, then aging treatment, on the martensitic  matrix can be the second phase precipitation and make the steel reinforcement.
 

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The role of Al  is to form a sedimentary hardening phase (Ni3Al) for other elements. In the  aging process, the cooling is not urgent, otherwise it is difficult to achieve  the reinforcement effect.


Product Description


631 Stainless Steel Mechanical Performance:

Strength of  extension σ0.2 (MPa): solid  solution,≤1030; 565℃ aging,≥1140; 510℃ aging,≥1230
 Offset yield  strength σ0.2 (MPa): solid  solution,≤380;565℃ aging,≥960;510℃ aging,≥1030
 Elongation δ5 (%):solid solution,≥20;565℃ aging,≥5;510℃ aging,≥4
 Percentage  reduction of area ψ (%):565℃ aging,≥25;510℃aging,≥10
 Hardness: solid  solution,≤229HB;565℃ aging,≥363HB;510℃ aging,≥388HB

631 Stainless Steel Heat Treatment:

  1. Solid solution, 1000 ~ 1100 ℃ fast cooling

  2. 565 ℃ ageing, after solid solution treatment, compared to 760 + 15 ℃  keep 90 min, within 1 h cooling below 15 ℃, 30 min, and then heated to 565 plus  or minus 10 ℃ maintain 90 min, air cooling

  3. 510 ℃ ageing, after solid solution treatment, compared to 955 + 10 ℃  for 10 min, air cooling to room temperature within 24 h of cooling to - 73 + 6  ℃, keep 8 h, and then heated to 510 plus or minus 10 ℃ keep 60 min, air cooling


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Packaging and Delivery


  1. Standard  exporting package.

  2. Original  package or neutral package.

  3. According  to clients’ needs.

  4. Shipped  in 10-35 days after payment.

 

FAQ


Price
 Q: How can I get the price?
 A: You can contact us through sending inquiry, or get  price list by Email.

Delivery
 Q: How long is the delivery time?
 A: It depends on quantity. Usually, 10-35 working  days.

Sample
 Q: Can I get sample to check the quality?
 A: Of course. We can supply sample, and free for some  small value products.

OEM
 Q: Do you provide OEM service?
 A: Yes, we do. Customized design is available.

Payment
 Q: What is your payment term?
 A: L/C, T/T, Paypal, Western Union, etc.

Certificate
 Q: What certificate do your products have?
 A: CE, ISO9001, RoHS, SGS, etc.

 


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