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EN 1.4057 Stainless Steel vs. EN 1.4449 Stainless Steel

Both EN 1.4057 stainless steel and EN 1.4449 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 33 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 1.4057 stainless steel and the bottom bar is EN 1.4449 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11 to 17
48
Fatigue Strength, MPa 320 to 430
240
Impact Strength: V-Notched Charpy, J 16 to 21
91
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 520 to 580
440
Tensile Strength: Ultimate (UTS), MPa 840 to 980
620
Tensile Strength: Yield (Proof), MPa 530 to 790
250

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 400
410
Maximum Temperature: Mechanical, °C 850
960
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
19
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.2
3.9
Embodied Energy, MJ/kg 32
54
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 16
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 96 to 130
240
Resilience: Unit (Modulus of Resilience), kJ/m3 700 to 1610
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30 to 35
22
Strength to Weight: Bending, points 26 to 28
20
Thermal Diffusivity, mm2/s 6.7
4.0
Thermal Shock Resistance, points 30 to 35
14

Alloy Composition

Carbon (C), % 0.12 to 0.22
0 to 0.035
Chromium (Cr), % 15 to 17
17 to 18.2
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 77.7 to 83.4
62.4 to 69.3
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
2.3 to 2.8
Nickel (Ni), % 1.5 to 2.5
11.5 to 12.5
Nitrogen (N), % 0
0 to 0.080
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015