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EN 1.4028 Stainless Steel vs. EN 1.4971 Stainless Steel

Both EN 1.4028 stainless steel and EN 1.4971 stainless steel are iron alloys. They have 45% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4028 stainless steel and the bottom bar is EN 1.4971 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 11 to 17
34
Fatigue Strength, MPa 230 to 400
270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
81
Shear Strength, MPa 410 to 550
530
Tensile Strength: Ultimate (UTS), MPa 660 to 930
800
Tensile Strength: Yield (Proof), MPa 390 to 730
340

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
570
Maximum Temperature: Mechanical, °C 760
1100
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 30
13
Thermal Expansion, µm/m-K 11
15

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
70
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 1.9
7.6
Embodied Energy, MJ/kg 27
110
Embodied Water, L/kg 100
300

Common Calculations

PREN (Pitting Resistance) 13
38
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 96
220
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 33
26
Strength to Weight: Bending, points 22 to 27
23
Thermal Diffusivity, mm2/s 8.1
3.4
Thermal Shock Resistance, points 23 to 32
19

Alloy Composition

Carbon (C), % 0.26 to 0.35
0.080 to 0.16
Chromium (Cr), % 12 to 14
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Iron (Fe), % 83.1 to 87.7
24.3 to 37.1
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 0
2.0 to 3.0