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EN 1.4347 Stainless Steel vs. EN 1.4945 Stainless Steel

Both EN 1.4347 stainless steel and EN 1.4945 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 31 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 1.4347 stainless steel and the bottom bar is EN 1.4945 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
19 to 34
Fatigue Strength, MPa 320
230 to 350
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 660
640 to 740
Tensile Strength: Yield (Proof), MPa 480
290 to 550

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
520
Maximum Temperature: Mechanical, °C 1100
920
Melting Completion (Liquidus), °C 1410
1490
Melting Onset (Solidus), °C 1370
1440
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 16
30
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 3.1
5.0
Embodied Energy, MJ/kg 44
73
Embodied Water, L/kg 170
150

Common Calculations

PREN (Pitting Resistance) 28
23
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
130 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 570
210 to 760
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24
22 to 25
Strength to Weight: Bending, points 22
20 to 22
Thermal Diffusivity, mm2/s 4.0
3.7
Thermal Shock Resistance, points 19
14 to 16

Alloy Composition

Carbon (C), % 0 to 0.050
0.040 to 0.1
Chromium (Cr), % 25 to 27
15.5 to 17.5
Iron (Fe), % 62.2 to 69.4
57.9 to 65.7
Manganese (Mn), % 0 to 1.5
0 to 1.5
Nickel (Ni), % 5.5 to 7.5
15.5 to 17.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0.1 to 0.2
0.060 to 0.14
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 1.5
0.3 to 0.6
Sulfur (S), % 0 to 0.020
0 to 0.015
Tungsten (W), % 0
2.5 to 3.5