You are here: Home » Alloys » Stainless steel » Stainless Steel 347

Product List

loading

Share to:
facebook sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button

Stainless Steel 347

Material: AISI347, UNS S34700, 1.4550
Type: Pipes
          Plates
          Bars
          Fittings
          Forgings
          Flanges
          Prefabrication
Availability:
Stainless Steel 347 Features:

Type 347 has excellent intergranular corrosion resistance and oxidation resistance. at high temperatures. This material is stabilized against chromium carbide formation by the addition of columbium and tantalum. Since these elements have a stronger affinity for carbon than chromium, columbium-tantalum carbides precipitate within the grains instead of forming at the grain boundaries. 


347 should be considered for applications requiring intermittent heating between 800ºF (427ºC) and 1650ºF (899ºC) or for welding under conditions which prevent a post-weld anneal. 347 is non-magnetic.


1) It features excellent corrosion resistance comparable to 304 stainless steel.

2) It restrains chromium carbide formation, resists sensitization, and has good intergranular corrosion resistance between 427°C and 816°C.

3) It exhibits certain strength of creep resistance even in strong oxidizing environment at high temperature of 816°C.

4) It is easy to form and weld.

5) It has good low temperature toughness.

Overall, 347 has similar performance like 321 (304 plus Ti) but is superior to 321.

Stainless steel 347 Chemical Composition, %

Grade

C≤

Mn

P≤

S≤

Si≤

Cr

Ni

Nb

347

0.08

2.0

0.045

0.03

0.75

17.0-19.0

9.0-13.0

10*C-1.0


Stainless steel 347 Mechanical Properties

Grade

Tensile, min, ksi[MPa]

Yield, min, ksi[MPa]

Elongation, %(min)

Hardness, HB(max)

347

75【515】

30【205】

40

201


Stainless steel 347 Physical Properties

Density: 7.9 g/cm3


Stainless steel 347 Equivalent Grades

STANDARD

WERKSTOFF NR.

UNS

JIS

GOST

EN

347

1.4550

S34700

SUS347

08Ch18N12B

X6CrNiNb18-10


Stainless steel 347 ASTM  Specification

Pipe,
SMLS& Welded

Tube,
SMLS& Welded

Pipe ,
Seamless

Sheet/Plate

Bar /Rod

Forging /Flange

BW Fittings

ASTM A312

ASTM A269

ASTM A213

ASTM A240

ASTM A276/A479

ASTM A182

ASTM A403


Stainless steel 347 Application:

  • Petrochemical, food, paper, etc

  • Exhaust manifold and branch pipe of aero engine

  • Turbine compressor hot gas pipeline

  • Aircraft collector rings

  • Aircraft exhaust stacks

  • Boiler casings


JN Alloy Products


JN Alloy is a distributor and product manufacturer of stainless steel, duplex steel, and nickel.
Tel: +86 19339900211
Add: Stainless steel Market 289, Xinwu District , Wuxi, China
Copyright © Jiangsu Special Nickel Alloy Technology Co., Ltd. All Rights Reserved.                                                                                                                                                                                                              Technical Support : coverweb