AISI Type 347

Category Steel

Class Stainless steel

Type Austenitic standard

Common

Names Chromium-Nickel steel

Designations France: AFNOR Z 6 CNN6 18.10

Germany: DIN 1.4550

Italy: UNI x 8 CrNiNb 18 11

Japan: JIS SUS 347

Sweden: SS 2338

United Kingdom: B.S. 347 S 17 , B.S. ANC 3 Grade B , B.S. En. 58 F , B.S. En. 58 G

United States: AMS 5512 , AMS 5556 , AMS 5558 , AMS 5571 , AMS 5575 , AMS 5646

, AMS 5654 , AMS 5674 , AMS 5680 , AMS 5681 , ASME SA182 , ASME SA193 ,

ASME SA194 , ASME SA213 , ASME SA240 , ASME SA249 , ASME SA312 , ASME SA320

(B8C) , ASME SA358 , ASME SA376 , ASME SA403 , ASME SA409 , ASME SA479 ,

ASTM A167 , ASTM A182 , ASTM A193 , ASTM A194 , ASTM A213 , ASTM A249 ,

ASTM A269 , ASTM A271 , ASTM A276 , ASTM A312 , ASTM A314 , ASTM A320 ,

ASTM A358 , ASTM A376 , ASTM A403 , ASTM A409 , ASTM A430 , ASTM A473 ,

ASTM A479 , ASTM A493 , ASTM A511 , ASTM A554 , ASTM A580 , ASTM A633 ,

FED QQ-S-763 , FED QQ-S-766 , FED QQ-W-423 , MIL SPEC MIL-S-23195 , MIL

SPEC MIL-S-23196 , MIL SPEC MIL-S-862 , SAE 30347 , SAE J405 (30347) ,

UNS S34700

Composition

Element Weight %

C 0.08

Mn 2.00

Si 1.00

Cr 17.0-19.0

Ni 9.0-13.0

P 0.045

S 0.03

Nb 0.7

Ta 0.1

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Ta 0.1

Mechanical Properties

Properties

Conditions

T (C) Treatment

Density (1000 kg/m3) 8 25

Poisson's Ratio 0.27-0.30 25

Elastic Modulus (GPa) 193 25

Tensile Strength (Mpa) 515

25 hot finished and annealed (plate, sheet, strip) more

Yield Strength (Mpa) 205

Elongation (%) 40

Reduction in Area (%) 50

Hardness (HRB) 88 (max) 25 annealed (plate, sheet, strip)

Thermal Properties

Properties

Conditions

T (C) Treatment

Thermal Expansion (10-6/C) 16.6 0-100 more

Thermal Conductivity (W/m-K) 16.1 100 more

Specific Heat (J/kg-K) 500 0-100

Electric Properties

Properties

Conditions

T (C) Treatment

Electric Resistivity (10-9W-m) 730 25

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