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EN 1.4958 Stainless Steel vs. SAE-AISI 1084 Steel

Both EN 1.4958 stainless steel and SAE-AISI 1084 steel are iron alloys. They have 47% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4958 stainless steel and the bottom bar is SAE-AISI 1084 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
11
Fatigue Strength, MPa 170
320 to 370
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Shear Strength, MPa 430
470 to 550
Tensile Strength: Ultimate (UTS), MPa 630
780 to 930
Tensile Strength: Yield (Proof), MPa 190
510 to 600

Thermal Properties

Latent Heat of Fusion, J/g 300
240
Maximum Temperature: Mechanical, °C 1090
400
Melting Completion (Liquidus), °C 1400
1450
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
51
Thermal Expansion, µm/m-K 15
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 30
1.8
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.3
1.4
Embodied Energy, MJ/kg 75
19
Embodied Water, L/kg 200
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
81 to 89
Resilience: Unit (Modulus of Resilience), kJ/m3 95
700 to 960
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
28 to 33
Strength to Weight: Bending, points 20
24 to 27
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 15
25 to 30

Alloy Composition

Aluminum (Al), % 0.2 to 0.5
0
Carbon (C), % 0.030 to 0.080
0.8 to 0.93
Chromium (Cr), % 19 to 22
0
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 41.1 to 50.6
98.1 to 98.6
Manganese (Mn), % 0 to 1.5
0.6 to 0.9
Nickel (Ni), % 30 to 32.5
0
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.7
0
Sulfur (S), % 0 to 0.010
0 to 0.050
Titanium (Ti), % 0.2 to 0.5
0