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S45000 Stainless Steel vs. AISI 420 Stainless Steel

Both S45000 stainless steel and AISI 420 stainless steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 33 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 AISI 420 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 410
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 6.8 to 14
8.0 to 15
Fatigue Strength, MPa 330 to 650
220 to 670
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Shear Strength, MPa 590 to 830
420 to 1010
Tensile Strength: Ultimate (UTS), MPa 980 to 1410
690 to 1720
Tensile Strength: Yield (Proof), MPa 580 to 1310
380 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 400
390
Maximum Temperature: Mechanical, °C 840
620
Melting Completion (Liquidus), °C 1440
1510
Melting Onset (Solidus), °C 1390
1450
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
27
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
7.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.8
2.0
Embodied Energy, MJ/kg 39
28
Embodied Water, L/kg 130
100

Common Calculations

PREN (Pitting Resistance) 17
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 160
88 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 850 to 4400
380 to 4410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 35 to 50
25 to 62
Strength to Weight: Bending, points 28 to 36
22 to 41
Thermal Diffusivity, mm2/s 4.5
7.3
Thermal Shock Resistance, points 33 to 47
25 to 62

Alloy Composition

Carbon (C), % 0 to 0.050
0.15 to 0.4
Chromium (Cr), % 14 to 16
12 to 14
Copper (Cu), % 1.3 to 1.8
0
Iron (Fe), % 72.1 to 79.3
82.3 to 87.9
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.5 to 1.0
0 to 0.5
Nickel (Ni), % 5.0 to 7.0
0 to 0.75
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030

Comparable Variants