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AISI 312 Stainless Steel vs. EN 1.4438 Stainless Steel

Both AISI 312 stainless steel and EN 1.4438 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 33 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 AISI 312 stainless steel and the bottom bar is EN 1.4438 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
41
Fatigue Strength, MPa 370
220
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
79
Shear Strength, MPa 510
420
Tensile Strength: Ultimate (UTS), MPa 780
620
Tensile Strength: Yield (Proof), MPa 510
250

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
1000
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
14
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 17
22
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.4
4.4
Embodied Energy, MJ/kg 48
60
Embodied Water, L/kg 170
160

Common Calculations

PREN (Pitting Resistance) 33
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
200
Resilience: Unit (Modulus of Resilience), kJ/m3 640
150
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
22
Strength to Weight: Bending, points 24
20
Thermal Diffusivity, mm2/s 4.3
3.7
Thermal Shock Resistance, points 21
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 24 to 26
17.5 to 19.5
Iron (Fe), % 62.2 to 69.2
57.3 to 66.5
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 1.2 to 2.0
3.0 to 4.0
Nickel (Ni), % 5.5 to 6.5
13 to 16
Nitrogen (N), % 0.14 to 0.2
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015