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S21904 Stainless Steel vs. S41045 Stainless Steel

Both S21904 stainless steel and S41045 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is S41045 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
160
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17 to 51
25
Fatigue Strength, MPa 380 to 550
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Shear Strength, MPa 510 to 620
280
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
430
Tensile Strength: Yield (Proof), MPa 390 to 910
230

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 430
430
Maximum Temperature: Mechanical, °C 980
740
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1350
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
29
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
8.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.0
2.2
Embodied Energy, MJ/kg 43
31
Embodied Water, L/kg 160
100

Common Calculations

PREN (Pitting Resistance) 25
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
92
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 36
16
Strength to Weight: Bending, points 23 to 29
16
Thermal Diffusivity, mm2/s 3.8
7.8
Thermal Shock Resistance, points 15 to 21
16

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.030
Chromium (Cr), % 19 to 21.5
12 to 13
Iron (Fe), % 59.5 to 67.4
83.8 to 88
Manganese (Mn), % 8.0 to 10
0 to 1.0
Nickel (Ni), % 5.5 to 7.5
0 to 0.5
Niobium (Nb), % 0
0 to 0.6
Nitrogen (N), % 0.15 to 0.4
0 to 0.030
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030