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EN 1.4971 Stainless Steel vs. EN 1.4749 Stainless Steel

Both EN 1.4971 stainless steel and EN 1.4749 stainless steel are iron alloys. They have 53% 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 1.4749 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
180
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
16
Fatigue Strength, MPa 270
190
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 81
80
Shear Strength, MPa 530
370
Tensile Strength: Ultimate (UTS), MPa 800
600
Tensile Strength: Yield (Proof), MPa 340
320

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 570
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 450
490
Thermal Conductivity, W/m-K 13
17
Thermal Expansion, µm/m-K 15
9.6

Otherwise Unclassified Properties

Base Metal Price, % relative 70
13
Density, g/cm3 8.4
7.6
Embodied Carbon, kg CO2/kg material 7.6
2.5
Embodied Energy, MJ/kg 110
36
Embodied Water, L/kg 300
160

Common Calculations

PREN (Pitting Resistance) 38
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
80
Resilience: Unit (Modulus of Resilience), kJ/m3 280
250
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 26
22
Strength to Weight: Bending, points 23
21
Thermal Diffusivity, mm2/s 3.4
4.6
Thermal Shock Resistance, points 19
22

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.15 to 0.2
Chromium (Cr), % 20 to 22.5
26 to 29
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
68.5 to 73.7
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0.15 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 2.0 to 3.0
0