Type 347 (UNS S34700) Stainless Steel

Type 347 (UNS S34700) Stainless Steel

Type 347 (UNS S34700) Stainless Steel Chemical Composition Chemical Composition (wt%) limits as specified in ASTM A240 and ASME SA240*. * Maximum, unless range is indicated Mechanical Properties Mechanical property requirements for annealed product as specified in ASTM A240 and ASME SA240....
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Product Details

Type 347 (UNS S34700) Stainless Steel

Chemical Composition
Chemical Composition (wt%) limits as specified in ASTM A240 and ASME SA240*.

Element

347

Carbon

0.08

Chromium

17.0-19.0

Nickel

9.0-13.0

Manganese

2.00

Silicon

0.75

Phosphorus

0.045

Sulfur

0.030

Niobium

10 x C min / 1.00 max

* Maximum, unless range is indicated


Mechanical Properties
Mechanical property requirements for annealed product as specified in ASTM A240 and ASME SA240.

Property

347

Yield Strength, min. (ksi)

30

Tensile Strength, min. (ksi)

75

Elongation, min. (%)

40

Hardness, max. (Rb)

92


Physical Properties
Physical properties for Type 347 stainless steel

Property

347 Data

Density, lb/in3

0.288

Modulus of Elasticity, psi

28.0 x 106

Coefficient of Thermal Expansion, 68-212˚F, /˚F

9.3 x 10-6

Thermal Conductivity, Btu/ft hr ˚F

9.2

Specific Heat, Btu/lb ˚F

0.12

Electrical Resistivity, Microohm-in

28.4


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