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EN 1.4057 +A Steel vs. EN 1.4313 +A Steel

Both EN 1.4057 +A steel and EN 1.4313 +A steel are iron alloys. Both are furnished in the annealed condition. They have a very high 97% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4057 +A steel and the bottom bar is EN 1.4313 +A steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
280
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
17
Fatigue Strength, MPa 320
410
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 520
590
Tensile Strength: Ultimate (UTS), MPa 840
960
Tensile Strength: Yield (Proof), MPa 530
670

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 400
390
Maximum Temperature: Mechanical, °C 850
780
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
25
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
2.4
Embodied Energy, MJ/kg 32
34
Embodied Water, L/kg 120
110

Common Calculations

PREN (Pitting Resistance) 16
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
150
Resilience: Unit (Modulus of Resilience), kJ/m3 700
1140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
34
Strength to Weight: Bending, points 26
28
Thermal Diffusivity, mm2/s 6.7
6.7
Thermal Shock Resistance, points 30
35

Alloy Composition

Carbon (C), % 0.12 to 0.22
0 to 0.050
Chromium (Cr), % 15 to 17
12 to 14
Iron (Fe), % 77.7 to 83.4
78.5 to 84.2
Manganese (Mn), % 0 to 1.5
0 to 1.5
Molybdenum (Mo), % 0
0.3 to 0.7
Nickel (Ni), % 1.5 to 2.5
3.5 to 4.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.015