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SAE-AISI 9254 Steel vs. EN 1.4988 Stainless Steel

Both SAE-AISI 9254 steel and EN 1.4988 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 31 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 SAE-AISI 9254 steel and the bottom bar is EN 1.4988 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
34
Fatigue Strength, MPa 280
230
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Shear Strength, MPa 410
430
Tensile Strength: Ultimate (UTS), MPa 660
640
Tensile Strength: Yield (Proof), MPa 410
290

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Mechanical, °C 410
920
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 46
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
23
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 1.5
6.0
Embodied Energy, MJ/kg 20
89
Embodied Water, L/kg 49
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
180
Resilience: Unit (Modulus of Resilience), kJ/m3 450
210
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
23
Strength to Weight: Bending, points 22
21
Thermal Diffusivity, mm2/s 12
4.0
Thermal Shock Resistance, points 20
14

Alloy Composition

Carbon (C), % 0.51 to 0.59
0.040 to 0.1
Chromium (Cr), % 0.6 to 0.8
15.5 to 17.5
Iron (Fe), % 96.1 to 97.1
62.1 to 69.5
Manganese (Mn), % 0.6 to 0.8
0 to 1.5
Molybdenum (Mo), % 0
1.1 to 1.5
Nickel (Ni), % 0
12.5 to 14.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0
0.060 to 0.14
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 1.2 to 1.6
0.3 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.015
Vanadium (V), % 0
0.6 to 0.85