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EN 1.4971 Stainless Steel vs. EN 1.4109 Stainless Steel

Both EN 1.4971 stainless steel and EN 1.4109 stainless steel are iron alloys. They have 47% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is EN 1.4109 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
250
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
19
Fatigue Strength, MPa 270
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
76
Shear Strength, MPa 530
480
Tensile Strength: Ultimate (UTS), MPa 800
770
Tensile Strength: Yield (Proof), MPa 340
420

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 570
390
Maximum Temperature: Mechanical, °C 1100
820
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
30
Thermal Expansion, µm/m-K 15
10

Otherwise Unclassified Properties

Base Metal Price, % relative 70
8.5
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 7.6
2.2
Embodied Energy, MJ/kg 110
30
Embodied Water, L/kg 300
110

Common Calculations

PREN (Pitting Resistance) 38
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
120
Resilience: Unit (Modulus of Resilience), kJ/m3 280
460
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
28
Strength to Weight: Bending, points 23
24
Thermal Diffusivity, mm2/s 3.4
8.1
Thermal Shock Resistance, points 19
28

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.6 to 0.75
Chromium (Cr), % 20 to 22.5
14 to 16
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
80.7 to 85
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0.4 to 0.8
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 2.0 to 3.0
0