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EN 1.4612 Stainless Steel vs. EN 1.4318 Stainless Steel

Both EN 1.4612 stainless steel and EN 1.4318 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4612 stainless steel and the bottom bar is EN 1.4318 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
44
Fatigue Strength, MPa 860 to 950
340
Impact Strength: V-Notched Charpy, J 11 to 22
85
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 1010 to 1110
520
Tensile Strength: Ultimate (UTS), MPa 1690 to 1850
740
Tensile Strength: Yield (Proof), MPa 1570 to 1730
380

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 790
910
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 16
13
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.6
2.8
Embodied Energy, MJ/kg 50
39
Embodied Water, L/kg 140
130

Common Calculations

PREN (Pitting Resistance) 19
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 210
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 60 to 65
27
Strength to Weight: Bending, points 40 to 43
23
Thermal Shock Resistance, points 58 to 63
17

Alloy Composition

Aluminum (Al), % 1.4 to 1.8
0
Carbon (C), % 0 to 0.015
0 to 0.030
Chromium (Cr), % 11 to 12.5
16.5 to 18.5
Iron (Fe), % 71.5 to 75.5
70.2 to 77.4
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 1.8 to 2.3
0
Nickel (Ni), % 10.2 to 11.3
6.0 to 8.0
Nitrogen (N), % 0 to 0.010
0.1 to 0.2
Phosphorus (P), % 0 to 0.010
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0 to 0.0050
0 to 0.015
Titanium (Ti), % 0.2 to 0.5
0