347H stainless steel plate

Chemical Composition (%) of 347H Stainless Steel Plate

Chromium	Nickel	Carbon	Silicon	Manganese	Phosphorus	Sulfur
17.00-19.00	9.00-13.00	0.04-0.10	0.75	2.00 max	0.045 max	0.03 max

Mechanical Properties of 347H Stainless Steel Plate

Yield Strength 0.2% Offset		Ultimate Tensile Strength		Elongationin 2 in.	Hardness
psi (min.)	(MPa)	psi (min.)	(MPa)	% (min.)	(max.)
30,000	205	75,000	515	40	201 Brinell

Physical Properties of 347H Stainless Steel Plate

Density (lb. / cu. in.)	Specific Gravity	Specific Heat (Btu/lb Deg F – [32-212 Deg F])	Melting Range	Modulus of Elasticity
0.288	7.96	0.12	2550 – 2635°F	28.0 x 10⁶psi 193 GPa

Alloy 347H is a stabilized, austenitic, chromium, stainless steel containing columbium which allows for the elimination of carbide precipitation, and, consequently, intergranualr corrosion. Alloy 347H is stabilized by the additions of chromium and tantalum and offers higher creep and stress rupture properties than alloy 304 and 304L which may also be used for exposures where sensitization and intergranualr corrosion are of concern. The addition of columbium also allows Alloy 347 to have excellent corrosion resistance, even superior to that of alloy 321H. 347H is the higher carbon composition form of Alloy 347 and demonstrates improved high temperature and creep properties.

Type 347H Major Design Features Include:

Similar resistance and corrosion protection as Alloy 304
Used for heavy welded equipment when annealing is not possible
Good oxidation resistance, on par with most other austenitic stainless steels
Higher carbon allows for better high temperature creep properties

347H Applications:

Boiler tubes and casings
Oil and gas refinery piping
Radiant superheaters
High-pressure steam pipes
Heat exchanger tubes
Cabin heaters
Heavy wall-welded equipment
Aircraft exhaust stacks and collector rings

If you are interested in other Stainless Steel Plates/Sheets, please click 302, 303, 304, 304L, 304H, 309, 309S, 310, 310S, 310H, 316, 316L, 317/317L, 317LMN, 321, 321H, 330, 347, 347H, 904L, 403, 405, 409, 410, 410S, 410/HT, 416, 416HT, 420, 422, 430, 440C, Duplex 2205, Duplex 2304, Duplex 2507.

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