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AISI 201 Stainless Steel vs. ASTM A387 Grade 12 Steel

Both AISI 201 stainless steel and ASTM A387 grade 12 steel are iron alloys. They have 73% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AISI 201 stainless steel and the bottom bar is ASTM A387 grade 12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 440
140 to 160
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 4.6 to 51
25
Fatigue Strength, MPa 280 to 600
190 to 230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 450 to 840
300 to 330
Tensile Strength: Ultimate (UTS), MPa 650 to 1450
470 to 520
Tensile Strength: Yield (Proof), MPa 300 to 1080
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 880
430
Melting Completion (Liquidus), °C 1410
1470
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
44
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.8
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.6
1.6
Embodied Energy, MJ/kg 38
21
Embodied Water, L/kg 140
51

Common Calculations

PREN (Pitting Resistance) 19
2.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 61 to 340
98 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 2970
180 to 250
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 23 to 52
16 to 18
Strength to Weight: Bending, points 22 to 37
17 to 18
Thermal Diffusivity, mm2/s 4.0
12
Thermal Shock Resistance, points 14 to 32
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.15
0.050 to 0.17
Chromium (Cr), % 16 to 18
0.8 to 1.2
Iron (Fe), % 67.5 to 75
97 to 98.2
Manganese (Mn), % 5.5 to 7.5
0.4 to 0.65
Molybdenum (Mo), % 0
0.45 to 0.6
Nickel (Ni), % 3.5 to 5.5
0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.060
0 to 0.025
Silicon (Si), % 0 to 1.0
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.025

Comparable Variants