01246 291 111

sales@westspecialfasteners.co.uk

01246 291 111

sales@westspecialfasteners.co.uk

347 Stainless Steel

About 347 Stainless Steel

347 is an austenitic solution treated stainless steel material which contains niobium. This alloy is known for its excellent high-temperature resistance, good corrosion resistance, and stability in high-stress environments, making it ideal for applications involving elevated temperatures.

347 stainless is particularly useful in applications that require both good corrosion resistance and strength at elevated temperatures, like in chemical processing, aerospace, and power generation industries.

347 Stainless Steel Grades & Equivalents

  • ASTM A193 B8C CLASS 1
  • ASTM A320 B8C CLASS 1
  • ASTM A276 S34700
  • ASTM A479 S34700
  • BS4882 B8C
  • 1.4550
  • BS970 347S31

Typical chemical analysis

C
0.080
P
0.045
Ni
9.00-12.00
Si
1.00
S
0.030
Cb/Nb
10 x C To 1.10
Mn
2.00
Cr
17.0-19.0

Typical mechanical properties

Tensile Strength

515 N/mm2 min

0.2% Proof Stress

205 N/mm2 min

Elongation

30%

Impacts

Nil

Hardness

223 HBw

Reduction of Area

50%

Stress Rupture

Nil

Other Remarks

Mechanicals may vary slightly depending on specification (above taken from ASTM A193)

Download metal data sheets

347 Stainless Steel Material Data Sheet

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Location

Callywhite Ln, Dronfield, S18 2XR
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