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EN 1.4742 Stainless Steel vs. SAE-AISI 1039 Steel

Both EN 1.4742 stainless steel and SAE-AISI 1039 steel are iron alloys. They have 80% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4742 stainless steel and the bottom bar is SAE-AISI 1039 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
180 to 200
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17
14 to 18
Fatigue Strength, MPa 180
230 to 370
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 370
380 to 420
Tensile Strength: Ultimate (UTS), MPa 600
610 to 690
Tensile Strength: Yield (Proof), MPa 300
340 to 580

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1000
400
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 19
51
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.2
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
1.8
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.2
1.4
Embodied Energy, MJ/kg 32
18
Embodied Water, L/kg 130
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
88 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 230
310 to 890
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22
22 to 24
Strength to Weight: Bending, points 21
20 to 22
Thermal Diffusivity, mm2/s 5.1
14
Thermal Shock Resistance, points 21
19 to 22

Alloy Composition

Aluminum (Al), % 0.7 to 1.2
0
Carbon (C), % 0 to 0.12
0.37 to 0.44
Chromium (Cr), % 17 to 19
0
Iron (Fe), % 77.2 to 81.6
98.5 to 98.9
Manganese (Mn), % 0 to 1.0
0.7 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0.7 to 1.4
0
Sulfur (S), % 0 to 0.015
0 to 0.050