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EN 1.4594 Stainless Steel vs. S44725 Stainless Steel

Both EN 1.4594 stainless steel and S44725 stainless steel are iron alloys. They have 87% of their average alloy composition in common. There are 32 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 1.4594 stainless steel and the bottom bar is S44725 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11 to 17
22
Fatigue Strength, MPa 490 to 620
210
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
81
Shear Strength, MPa 620 to 700
320
Tensile Strength: Ultimate (UTS), MPa 1020 to 1170
500
Tensile Strength: Yield (Proof), MPa 810 to 1140
310

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 450
500
Maximum Temperature: Mechanical, °C 820
1100
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 15
15
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 3.2
3.1
Embodied Energy, MJ/kg 45
44
Embodied Water, L/kg 130
170

Common Calculations

PREN (Pitting Resistance) 19
33
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
99
Resilience: Unit (Modulus of Resilience), kJ/m3 1660 to 3320
240
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 36 to 41
18
Strength to Weight: Bending, points 29 to 31
18
Thermal Diffusivity, mm2/s 4.4
4.6
Thermal Shock Resistance, points 34 to 39
16

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.015
Chromium (Cr), % 13 to 15
25 to 28.5
Copper (Cu), % 1.2 to 2.0
0
Iron (Fe), % 72.6 to 79.5
67.6 to 73.5
Manganese (Mn), % 0 to 1.0
0 to 0.4
Molybdenum (Mo), % 1.2 to 2.0
1.5 to 2.5
Nickel (Ni), % 5.0 to 6.0
0 to 0.3
Niobium (Nb), % 0.15 to 0.6
0 to 0.26
Nitrogen (N), % 0
0 to 0.018
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 0.040
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 0
0 to 0.26