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17-7PH Precipitation Hardened Stainless Steel Round Bar Stock NAS631 S17700

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Shanghai Aboom Metal prodcut co.,ltd
City:shanghai
Province/State:shanghai
Country/Region:china
Contact Person:Mrmichael
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17-7PH Precipitation Hardened Stainless Steel Round Bar Stock NAS631 S17700

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Brand Name :ABOOM
Model Number :17-7PH
Certification :EN 10204 Type 3.1
Place of Origin :CHINA
MOQ :1000kgs
Price :USD Negotiable
Payment Terms :T/T
Supply Ability :200 TONS PER MONTH
Delivery Time :7-15dyas
Packaging Details :Bare packing/bundle packing with woven bag/wooden or steel frame crate packing/plastic cap protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.
TYPE OF MATERIAL :Precipitation, hardening, martensitic stainless steel
PRODUCT :17-7PH precipitation hardened stainless steel round bar
STANDARD :ASTM A564
GRADE :NAS631 17-7PH
Manufacturing process :The steel melt shall be refined with AOD or equivalent.
application :Bearings, steam turbine parts
Microstructure :Precipitation hardening
Testing facility :Accept other third-party testing agencies such as SGS
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17-7PH Precipitation Hardened Stainless Steel Round Bar Stock NAS631 S17700

17-7PH precipitation hardened stainless steel round bar stock NAS631 S17700

17-7PH is an austenite-martensitic precipitation-hardening stainless steel developed on the basis of 18-8CrNi, also known as controlled phase change stainless steel. After solution treatment, it is an unstable austenite structure with good plasticity and toughness. And workability, adjusted to make the austenite precipitated carbide composition change, and then after martensite transformation treatment, most of the structure is transformed into low toughness tempered martensite with better toughness, this state is the use of steel State, with good medium temperature mechanical properties. Corrosion resistance is better than general martensitic stainless steel.

3/16" 1/4" 5/16" 3/8" 7/16" 1/2" 9/16" 5/8" 3/4" 7/8" 1"
4.8mm 6.3mm 7.9mm 9.5mm 11.1mm 12.7mm 14.3mm 15.9mm 19mm 22.2mm 25.4mm
1 1/8" 1 1/4" 1 1/2" 1 3/4" 2" 2 1/4" 2 1/2" 2 3/4" 3" 3 1/2" 4"
28.6mm 31.8mm 38.1mm 44.5mm 50.8mm 57.2mm 63.5mm 69.9mm 76.2mm 88.9mm 101.6mm

Application area:
Offshore platforms, helicopter decks, other platforms
food industry
Pulp and paper industry
Aerospace (turbine blades)
mechanical part
Nuclear waste barrel


Grade comparison:

  • NASNAS 631
  • UNSS17700
  • EN / DIN1.4568
  • JISSUS 631

chemical composition:

(C)≤0.09
(Mn)≤1.00
(Ni)6.50~7.75
(Si)≤1.00
(P)≤0.035
(S)≤0.030
(Cr)16.00~18.00
(Al)0.75~1.50

17-7PH Precipitation Hardened Stainless Steel Round Bar Stock  NAS631 S17700

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