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AISI 347H Stainless Steel vs. SAE-AISI 12L14 Steel

Both AISI 347H stainless steel and SAE-AISI 12L14 steel are iron alloys. They have 70% of their average alloy composition in common. There are 32 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 SAE-AISI 12L14 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
140 to 170
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
11 to 25
Fatigue Strength, MPa 200
190 to 290
Poisson's Ratio 0.28
0.29
Reduction in Area, % 51
39 to 51
Shear Modulus, GPa 77
72
Shear Strength, MPa 400
280 to 370
Tensile Strength: Ultimate (UTS), MPa 580
440 to 620
Tensile Strength: Yield (Proof), MPa 230
260 to 460

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 940
400
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
51
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 19
1.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.6
1.4
Embodied Energy, MJ/kg 52
18
Embodied Water, L/kg 150
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
64 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 140
180 to 560
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
15 to 22
Strength to Weight: Bending, points 20
16 to 20
Thermal Diffusivity, mm2/s 4.2
14
Thermal Shock Resistance, points 13
14 to 20

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.15
Chromium (Cr), % 17 to 19
0
Iron (Fe), % 64.1 to 74
97.9 to 98.7
Lead (Pb), % 0
0.15 to 0.35
Manganese (Mn), % 0 to 2.0
0.85 to 1.2
Nickel (Ni), % 9.0 to 13
0
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.045
0.040 to 0.090
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0.26 to 0.35