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EN 1.4418 Stainless Steel vs. EN 1.4971 Stainless Steel

Both EN 1.4418 stainless steel and EN 1.4971 stainless steel are iron alloys. They have 54% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4418 stainless steel and the bottom bar is EN 1.4971 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 16 to 20
34
Fatigue Strength, MPa 350 to 480
270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
81
Shear Strength, MPa 530 to 620
530
Tensile Strength: Ultimate (UTS), MPa 860 to 1000
800
Tensile Strength: Yield (Proof), MPa 540 to 790
340

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
570
Maximum Temperature: Mechanical, °C 870
1100
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 10
15

Otherwise Unclassified Properties

Base Metal Price, % relative 13
70
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 2.8
7.6
Embodied Energy, MJ/kg 39
110
Embodied Water, L/kg 130
300

Common Calculations

PREN (Pitting Resistance) 20
38
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
220
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1590
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 31 to 36
26
Strength to Weight: Bending, points 26 to 28
23
Thermal Diffusivity, mm2/s 4.0
3.4
Thermal Shock Resistance, points 31 to 36
19

Alloy Composition

Carbon (C), % 0 to 0.060
0.080 to 0.16
Chromium (Cr), % 15 to 17
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Iron (Fe), % 73.2 to 80.2
24.3 to 37.1
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0.8 to 1.5
2.5 to 3.5
Nickel (Ni), % 4.0 to 6.0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0 to 0.020
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 0
2.0 to 3.0