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EN 1.4981 Stainless Steel vs. ASTM A182 Grade F12 Class 2

Both EN 1.4981 stainless steel and ASTM A182 grade F12 class 2 are iron alloys. They have 66% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4981 stainless steel and the bottom bar is ASTM A182 grade F12 class 2.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
22
Fatigue Strength, MPa 210
220
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 420
340
Tensile Strength: Ultimate (UTS), MPa 610
540
Tensile Strength: Yield (Proof), MPa 240
310

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 940
430
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
43
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 25
2.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.8
1.6
Embodied Energy, MJ/kg 67
21
Embodied Water, L/kg 150
52

Common Calculations

PREN (Pitting Resistance) 22
2.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
100
Resilience: Unit (Modulus of Resilience), kJ/m3 150
260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
19
Strength to Weight: Bending, points 20
19
Thermal Diffusivity, mm2/s 4.3
12
Thermal Shock Resistance, points 14
16

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.1 to 0.2
Chromium (Cr), % 15.5 to 17.5
0.8 to 1.3
Iron (Fe), % 59.6 to 66.7
96.4 to 98.3
Manganese (Mn), % 0 to 1.5
0.3 to 0.8
Molybdenum (Mo), % 1.6 to 2.0
0.44 to 0.65
Nickel (Ni), % 15.5 to 17.5
0
Niobium (Nb), % 0.4 to 1.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.3 to 0.6
0.1 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.040