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EN 1.4034 Stainless Steel vs. EN 1.4125 Stainless Steel

Both EN 1.4034 stainless steel and EN 1.4125 stainless steel are iron alloys. They have a very high 95% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4034 stainless steel and the bottom bar is EN 1.4125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 14
19
Fatigue Strength, MPa 230 to 400
300
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 420 to 540
500
Tensile Strength: Ultimate (UTS), MPa 690 to 900
800
Tensile Strength: Yield (Proof), MPa 390 to 730
470

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 390
390
Maximum Temperature: Mechanical, °C 770
870
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 30
15
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
9.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
2.3
Embodied Energy, MJ/kg 27
32
Embodied Water, L/kg 100
120

Common Calculations

PREN (Pitting Resistance) 14
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 81 to 94
130
Resilience: Unit (Modulus of Resilience), kJ/m3 400 to 1370
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 32
29
Strength to Weight: Bending, points 22 to 27
25
Thermal Diffusivity, mm2/s 8.1
4.1
Thermal Shock Resistance, points 24 to 32
29

Alloy Composition

Carbon (C), % 0.43 to 0.5
1.0 to 1.2
Chromium (Cr), % 12.5 to 14.5
16 to 18
Iron (Fe), % 83 to 87.1
78 to 82.7
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
0.4 to 0.8
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015