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N08904 Stainless Steel vs. ASTM A372 Grade K Steel

Both N08904 stainless steel and ASTM A372 grade K steel are iron alloys. They have 51% 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 N08904 stainless steel and the bottom bar is ASTM A372 grade K steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
230
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 38
23
Fatigue Strength, MPa 200
440
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Shear Strength, MPa 370
490
Tensile Strength: Ultimate (UTS), MPa 540
780
Tensile Strength: Yield (Proof), MPa 240
620

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
440
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
48
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 32
4.4
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 5.8
1.8
Embodied Energy, MJ/kg 79
24
Embodied Water, L/kg 200
57

Common Calculations

PREN (Pitting Resistance) 37
2.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
160
Resilience: Unit (Modulus of Resilience), kJ/m3 150
1010
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
27
Strength to Weight: Bending, points 18
24
Thermal Diffusivity, mm2/s 3.1
13
Thermal Shock Resistance, points 12
23

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.18
Chromium (Cr), % 19 to 23
1.0 to 1.8
Copper (Cu), % 1.0 to 2.0
0
Iron (Fe), % 38.8 to 53
93.4 to 96.6
Manganese (Mn), % 0 to 2.0
0.1 to 0.4
Molybdenum (Mo), % 4.0 to 5.0
0.2 to 0.6
Nickel (Ni), % 23 to 28
2.0 to 3.3
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.035
0 to 0.010