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S44626 Stainless Steel vs. S41045 Stainless Steel

Both S44626 stainless steel and S41045 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 85% of their average alloy composition in common.

For each property being compared, the top bar is S44626 stainless steel and the bottom bar is S41045 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
160
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
25
Fatigue Strength, MPa 230
160
Poisson's Ratio 0.27
0.28
Rockwell B Hardness 83
70
Shear Modulus, GPa 80
76
Shear Strength, MPa 340
280
Tensile Strength: Ultimate (UTS), MPa 540
430
Tensile Strength: Yield (Proof), MPa 350
230

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 560
430
Maximum Temperature: Mechanical, °C 1100
740
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
29
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 14
8.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.9
2.2
Embodied Energy, MJ/kg 42
31
Embodied Water, L/kg 160
100

Common Calculations

PREN (Pitting Resistance) 30
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
92
Resilience: Unit (Modulus of Resilience), kJ/m3 300
140
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 19
16
Strength to Weight: Bending, points 19
16
Thermal Diffusivity, mm2/s 4.6
7.8
Thermal Shock Resistance, points 18
16

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 25 to 27
12 to 13
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 68.1 to 74.1
83.8 to 88
Manganese (Mn), % 0 to 0.75
0 to 1.0
Molybdenum (Mo), % 0.75 to 1.5
0
Nickel (Ni), % 0 to 0.5
0 to 0.5
Niobium (Nb), % 0
0 to 0.6
Nitrogen (N), % 0 to 0.040
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0.2 to 1.0
0