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EN 1.4980 Stainless Steel vs. SAE-AISI 4340M Steel

Both EN 1.4980 stainless steel and SAE-AISI 4340M steel are iron alloys. They have 58% of their average alloy composition in common. There are 32 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 1.4980 stainless steel and the bottom bar is SAE-AISI 4340M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
6.0
Fatigue Strength, MPa 410
690
Impact Strength: V-Notched Charpy, J 57
18
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
72
Shear Strength, MPa 630
1360
Tensile Strength: Ultimate (UTS), MPa 1030
2340
Tensile Strength: Yield (Proof), MPa 680
1240

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Mechanical, °C 920
430
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 13
38
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 26
3.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 6.0
1.9
Embodied Energy, MJ/kg 87
26
Embodied Water, L/kg 170
55

Common Calculations

PREN (Pitting Resistance) 19
2.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1180
4120
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 36
84
Strength to Weight: Bending, points 28
51
Thermal Diffusivity, mm2/s 3.5
10
Thermal Shock Resistance, points 22
70

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.030 to 0.080
0.38 to 0.43
Chromium (Cr), % 13.5 to 16
0.7 to 1.0
Iron (Fe), % 49.2 to 58.5
93.3 to 94.8
Manganese (Mn), % 1.0 to 2.0
0.65 to 0.9
Molybdenum (Mo), % 1.0 to 1.5
0.35 to 0.45
Nickel (Ni), % 24 to 27
1.7 to 2.0
Phosphorus (P), % 0 to 0.025
0 to 0.012
Silicon (Si), % 0 to 1.0
1.5 to 1.8
Sulfur (S), % 0 to 0.015
0 to 0.012
Titanium (Ti), % 1.9 to 2.3
0
Vanadium (V), % 0.1 to 0.5
0.050 to 0.1