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EN 1.4438 Stainless Steel vs. S44700 Stainless Steel

Both EN 1.4438 stainless steel and S44700 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.4438 stainless steel and the bottom bar is S44700 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
200
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 41
23
Fatigue Strength, MPa 220
300
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 79
82
Shear Strength, MPa 420
380
Tensile Strength: Ultimate (UTS), MPa 620
600
Tensile Strength: Yield (Proof), MPa 250
450

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 420
460
Maximum Temperature: Mechanical, °C 1000
1100
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 22
18
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.4
3.6
Embodied Energy, MJ/kg 60
49
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 31
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
120
Resilience: Unit (Modulus of Resilience), kJ/m3 150
480
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
21
Strength to Weight: Bending, points 20
20
Thermal Shock Resistance, points 14
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.010
Chromium (Cr), % 17.5 to 19.5
28 to 30
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 57.3 to 66.5
64.9 to 68.5
Manganese (Mn), % 0 to 2.0
0 to 0.3
Molybdenum (Mo), % 3.0 to 4.0
3.5 to 4.2
Nickel (Ni), % 13 to 16
0 to 0.15
Nitrogen (N), % 0 to 0.1
0 to 0.020
Phosphorus (P), % 0 to 0.045
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.015
0 to 0.020