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S45000 Stainless Steel vs. ASTM A387 Grade 12 Steel

Both S45000 stainless steel and ASTM A387 grade 12 steel are iron alloys. They have 78% 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 S45000 stainless steel and the bottom bar is ASTM A387 grade 12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 410
140 to 160
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 6.8 to 14
25
Fatigue Strength, MPa 330 to 650
190 to 230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 590 to 830
300 to 330
Tensile Strength: Ultimate (UTS), MPa 980 to 1410
470 to 520
Tensile Strength: Yield (Proof), MPa 580 to 1310
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 840
430
Melting Completion (Liquidus), °C 1440
1470
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
44
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.6
Embodied Energy, MJ/kg 39
21
Embodied Water, L/kg 130
51

Common Calculations

PREN (Pitting Resistance) 17
2.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 160
98 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 850 to 4400
180 to 250
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 35 to 50
16 to 18
Strength to Weight: Bending, points 28 to 36
17 to 18
Thermal Diffusivity, mm2/s 4.5
12
Thermal Shock Resistance, points 33 to 47
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.050
0.050 to 0.17
Chromium (Cr), % 14 to 16
0.8 to 1.2
Copper (Cu), % 1.3 to 1.8
0
Iron (Fe), % 72.1 to 79.3
97 to 98.2
Manganese (Mn), % 0 to 1.0
0.4 to 0.65
Molybdenum (Mo), % 0.5 to 1.0
0.45 to 0.6
Nickel (Ni), % 5.0 to 7.0
0
Phosphorus (P), % 0 to 0.040
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