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AISI 444 Stainless Steel vs. ASTM A182 Grade F12 Class 1

Both AISI 444 stainless steel and ASTM A182 grade F12 class 1 are iron alloys. Both are furnished in the annealed condition. They have 79% 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 444 stainless steel and the bottom bar is ASTM A182 grade F12 class 1.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
23
Fatigue Strength, MPa 210
180
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 300
300
Tensile Strength: Ultimate (UTS), MPa 470
470
Tensile Strength: Yield (Proof), MPa 310
250

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 930
430
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
45
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.8
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.4
1.6
Embodied Energy, MJ/kg 47
21
Embodied Water, L/kg 130
52

Common Calculations

PREN (Pitting Resistance) 26
2.8
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
91
Resilience: Unit (Modulus of Resilience), kJ/m3 240
160
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
17
Strength to Weight: Bending, points 17
17
Thermal Diffusivity, mm2/s 6.2
12
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0 to 0.025
0.050 to 0.15
Chromium (Cr), % 17.5 to 19.5
0.8 to 1.3
Iron (Fe), % 73.3 to 80.8
96.8 to 98.4
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 1.8 to 2.5
0.44 to 0.65
Nickel (Ni), % 0 to 1.0
0
Niobium (Nb), % 0.2 to 0.8
0
Nitrogen (N), % 0 to 0.035
0
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.045
Titanium (Ti), % 0.2 to 0.8
0