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EN 1.4903 Stainless Steel vs. EN 1.4057 Stainless Steel

Both EN 1.4903 stainless steel and EN 1.4057 stainless steel are iron alloys. They have a moderately high 90% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4903 stainless steel and the bottom bar is EN 1.4057 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20 to 21
11 to 17
Fatigue Strength, MPa 320 to 330
320 to 430
Impact Strength: V-Notched Charpy, J 42 to 46
16 to 21
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 420
520 to 580
Tensile Strength: Ultimate (UTS), MPa 670 to 680
840 to 980
Tensile Strength: Yield (Proof), MPa 500
530 to 790

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 380
400
Maximum Temperature: Mechanical, °C 650
850
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 26
25
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 4.0
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
9.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.2
Embodied Energy, MJ/kg 36
32
Embodied Water, L/kg 88
120

Common Calculations

PREN (Pitting Resistance) 13
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
96 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 650
700 to 1610
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
30 to 35
Strength to Weight: Bending, points 22
26 to 28
Thermal Diffusivity, mm2/s 7.0
6.7
Thermal Shock Resistance, points 23
30 to 35

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.080 to 0.12
0.12 to 0.22
Chromium (Cr), % 8.0 to 9.5
15 to 17
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 87.1 to 90.5
77.7 to 83.4
Manganese (Mn), % 0.3 to 0.6
0 to 1.5
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
1.5 to 2.5
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Vanadium (V), % 0.18 to 0.25
0