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EN 1.4912 Stainless Steel vs. EN 1.4034 Stainless Steel

Both EN 1.4912 stainless steel and EN 1.4034 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4912 stainless steel and the bottom bar is EN 1.4034 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
11 to 14
Fatigue Strength, MPa 200
230 to 400
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 420
420 to 540
Tensile Strength: Ultimate (UTS), MPa 610
690 to 900
Tensile Strength: Yield (Proof), MPa 230
390 to 730

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 520
390
Maximum Temperature: Mechanical, °C 940
770
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
30
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 20
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.8
2.0
Embodied Energy, MJ/kg 55
27
Embodied Water, L/kg 140
100

Common Calculations

PREN (Pitting Resistance) 18
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
81 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 130
400 to 1370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
25 to 32
Strength to Weight: Bending, points 20
22 to 27
Thermal Diffusivity, mm2/s 4.2
8.1
Thermal Shock Resistance, points 14
24 to 32

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.43 to 0.5
Chromium (Cr), % 17 to 19
12.5 to 14.5
Iron (Fe), % 64.6 to 73.6
83 to 87.1
Manganese (Mn), % 0 to 2.0
0 to 1.0
Nickel (Ni), % 9.0 to 12
0
Niobium (Nb), % 0.4 to 1.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015