Corrosion Resisting Alloy 347:-

Technical Data Sheet

Type 347 Tube is available the following size ranges.
Outside Diameter - 0.25mm (0.010") up to 16.00mm (0.625") Wall - 0.05mm (0.002") up to 1.00mm (0.040") Straight Lengths - 1.00mm (0.040") up to 5000.00mm (197") Coils Lengths - 5 Metres to 15 Metres Standard Tolerance- OD &ID +/-0.03mm (0.0012") Wall +/- 10% Tight Tolerance - OD&ID +/- 0.015mm (0.0006") Wall +/-3% Some thin wall tubes up to 25.40 mm (1.000") can be supplied. For all stock availability of contact Sales.

Chemical Composition Limits
Weight % C P Si Ni Mn S Cr Cb + Ta Fe Mo Cu
347 Tube 0.08 max 0.040 max 1.00 max 9-12 2.0 max 0.030 max 17-19 10 x C min Bal 0.75 max 0.75 max

GAlloy 347 is a chromium nickel stainless steel which has been modified by the addition of columbium and tantalum. The main advantage of this is an excellent resistance to intergranular corrosion which is common to other austenitic stainless steels following exposure to temperatures of 800° to 1500°F. Type 347 has about the same general corrosion resistance as Type 302.

Type 347 is generally used where corrosive conditions are severe, such as harsh steel exhaust stacks, manifolds and ring collectors. Type 347 is also used for heavy welded assemblies which cannot be annealed after welding or where the operating conditions cause exposure within the temperature range between 800° to 1500°F.

Typical Mechanical Properties

Material 0.2% Offset Yield Strength Ultimate Tensile Strength % Elongation in 2" (50.8mm) Hardness Brinell (Plate)
Alloy 347 Tube 30,000 psi
205 MPa
75,000 psi
515 MPa
40 201


347 / 347H
AMS 5512 Sheet / strip / plate
AMS 5556 Seamless/ welded tube
AMS 5558 Welded /thin wall tube
AMS 5571 Seamless tube
AMS 5575 Welded tube
AMS 5646 Bars / wire / forging
AMS 5654 Bars (harsh steel quality)
AMS 5674 Wire
AMS 5680 Wire
MIL-T-8606 Seamless tube
MIL-T-8606 Welded tube 
MIL-T-8808 Seamless tube
MIL-T-8808 Welded tube
ASTM A240 / ASME SA240
ASTM A167 / ASME SA167
ASTM A276 / ASME SA276
ASTM A314 / ASME SA314
ASTM A479 / ASME A479
BS 2S130
BS 2T66 Tube
BS T72 Tube
BS S527 Sheet
BS 970; 347S17
EN58F / EN58G
MSRR 6522
MSRR 6524
Werkstoff 1.4544
Werkstoff 1.4546
Werkstoff 1.4550
Werkstoff 1.5446*Tube
UNS S30347

Harsh Steel export Stainless Steel 347 Tube below contries.

Harsh steel is a major stockist and Exporter of Stainless Steel 347 Tube to many countries of the world such as Singapore, Brisbane, Sydney, Melbourne, Australia, Houston, TX, San Diego, San Francisco, Atlanta, USA, Brentford, United Kingdom, Phoenix, Ireland, New Zealand and Canada, Western Australia , Queensland, New South Wales, South Australia, Victoria, Australian Capital Territory, Tasmania, Northern Territory, Ontario, British Columbia, Yukon Territory, Alberta, Manitoba, Saskatchewan, New foundland, Prince Edward Island, New Brunswick, Nova Scotia, Eastern Cape, Gauteng, Kwazulu-Natal, Western Cape, England, Scotland, Wales, Northern Ireland, Lagos, Abuja Capital Territory, Vadodara, Mumbai, Chennai, New Delhi, Mahape, Gurgaon, Noida, Bangalore, Coimbatore, Cochin, Ash Sharqiyah, Ar Riyad, Makkah, Dhahran, Riyadh, Jiddah, Jeddah, Masqat, Kwazulu-Natal, Gauteng, Western Cape, Free State, Eastern Cape, Alberta, Saskatchewan, British Columbia, Newfoundland, New Brunswick, Manitoba, Ontario, Nova Scotia, Quebec, Calgary, Edmonton, Vancouver, Toronto, Birmingham, Brentford, Manchester, Bristol, Sheffield, Milton Keynes, London, Poplar, Edinburgh, Thames Ditton.

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