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S41045 Stainless Steel vs. AISI 430 Stainless Steel

Both S41045 stainless steel and AISI 430 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a very high 95% of their average alloy composition in common. There are 34 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 S41045 stainless steel and the bottom bar is AISI 430 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
24
Fatigue Strength, MPa 160
180
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 70
77
Shear Modulus, GPa 76
77
Shear Strength, MPa 280
320
Tensile Strength: Ultimate (UTS), MPa 430
500
Tensile Strength: Yield (Proof), MPa 230
260

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 430
410
Maximum Temperature: Mechanical, °C 740
870
Melting Completion (Liquidus), °C 1450
1510
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 29
25
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
8.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.2
2.1
Embodied Energy, MJ/kg 31
30
Embodied Water, L/kg 100
120

Common Calculations

PREN (Pitting Resistance) 13
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
100
Resilience: Unit (Modulus of Resilience), kJ/m3 140
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 16
18
Strength to Weight: Bending, points 16
18
Thermal Diffusivity, mm2/s 7.8
6.7
Thermal Shock Resistance, points 16
18

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 12 to 13
16 to 18
Iron (Fe), % 83.8 to 88
79.1 to 84
Manganese (Mn), % 0 to 1.0
0 to 1.0
Nickel (Ni), % 0 to 0.5
0 to 0.75
Niobium (Nb), % 0 to 0.6
0
Nitrogen (N), % 0 to 0.030
0
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