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AISI 347H Stainless Steel vs. S17700 Stainless Steel

Both AISI 347H stainless steel and S17700 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 347H stainless steel and the bottom bar is S17700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
180 to 430
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
1.0 to 23
Fatigue Strength, MPa 200
290 to 560
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 400
740 to 940
Tensile Strength: Ultimate (UTS), MPa 580
1180 to 1650
Tensile Strength: Yield (Proof), MPa 230
430 to 1210

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 480
410
Maximum Temperature: Mechanical, °C 940
890
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 19
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.6
2.8
Embodied Energy, MJ/kg 52
40
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 18
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
15 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 140
460 to 3750
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
42 to 59
Strength to Weight: Bending, points 20
32 to 40
Thermal Diffusivity, mm2/s 4.2
4.1
Thermal Shock Resistance, points 13
39 to 54

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.5
Carbon (C), % 0.040 to 0.1
0 to 0.090
Chromium (Cr), % 17 to 19
16 to 18
Iron (Fe), % 64.1 to 74
70.5 to 76.8
Manganese (Mn), % 0 to 2.0
0 to 1.0
Nickel (Ni), % 9.0 to 13
6.5 to 7.8
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030