MakeItFrom.com
Menu (ESC)

EN 1.4905 Stainless Steel vs. SAE-AISI 4340M Steel

Both EN 1.4905 stainless steel and SAE-AISI 4340M steel are iron alloys. They have 90% 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 1.4905 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, % 19
6.0
Fatigue Strength, MPa 330
690
Impact Strength: V-Notched Charpy, J 38
18
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
72
Shear Strength, MPa 460
1360
Tensile Strength: Ultimate (UTS), MPa 740
2340
Tensile Strength: Yield (Proof), MPa 510
1240

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Mechanical, °C 660
430
Melting Completion (Liquidus), °C 1480
1440
Melting Onset (Solidus), °C 1440
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 26
38
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 4.2
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
3.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.9
Embodied Energy, MJ/kg 40
26
Embodied Water, L/kg 90
55

Common Calculations

PREN (Pitting Resistance) 15
2.2
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
120
Resilience: Unit (Modulus of Resilience), kJ/m3 680
4120
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
84
Strength to Weight: Bending, points 23
51
Thermal Diffusivity, mm2/s 7.0
10
Thermal Shock Resistance, points 25
70

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Boron (B), % 0.00050 to 0.0050
0
Carbon (C), % 0.090 to 0.13
0.38 to 0.43
Chromium (Cr), % 8.5 to 9.5
0.7 to 1.0
Iron (Fe), % 86.2 to 88.8
93.3 to 94.8
Manganese (Mn), % 0.3 to 0.6
0.65 to 0.9
Molybdenum (Mo), % 0.9 to 1.1
0.35 to 0.45
Nickel (Ni), % 0.1 to 0.4
1.7 to 2.0
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.050 to 0.090
0
Phosphorus (P), % 0 to 0.020
0 to 0.012
Silicon (Si), % 0.1 to 0.5
1.5 to 1.8
Sulfur (S), % 0 to 0.010
0 to 0.012
Tungsten (W), % 0.9 to 1.1
0
Vanadium (V), % 0.18 to 0.25
0.050 to 0.1