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S45000 Stainless Steel vs. AISI 415 Stainless Steel

Both S45000 stainless steel and AISI 415 stainless steel are iron alloys. They have a moderately high 95% of their average alloy composition in common.

For each property being compared, the top bar is S45000 stainless steel and the bottom bar is AISI 415 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 410
260
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 6.8 to 14
17
Fatigue Strength, MPa 330 to 650
430
Poisson's Ratio 0.28
0.28
Reduction in Area, % 22 to 50
50
Rockwell C Hardness 28 to 44
28
Shear Modulus, GPa 76
76
Shear Strength, MPa 590 to 830
550
Tensile Strength: Ultimate (UTS), MPa 980 to 1410
900
Tensile Strength: Yield (Proof), MPa 580 to 1310
700

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 400
390
Maximum Temperature: Mechanical, °C 840
780
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
24
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.5
Embodied Energy, MJ/kg 39
35
Embodied Water, L/kg 130
110

Common Calculations

PREN (Pitting Resistance) 17
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 160
140
Resilience: Unit (Modulus of Resilience), kJ/m3 850 to 4400
1250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 35 to 50
32
Strength to Weight: Bending, points 28 to 36
26
Thermal Diffusivity, mm2/s 4.5
6.4
Thermal Shock Resistance, points 33 to 47
33

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.050
Chromium (Cr), % 14 to 16
11.5 to 14
Copper (Cu), % 1.3 to 1.8
0
Iron (Fe), % 72.1 to 79.3
77.8 to 84
Manganese (Mn), % 0 to 1.0
0.5 to 1.0
Molybdenum (Mo), % 0.5 to 1.0
0.5 to 1.0
Nickel (Ni), % 5.0 to 7.0
3.5 to 5.5
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030