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EN 1.4404 Stainless Steel vs. AISI 316 Stainless Steel

Both EN 1.4404 stainless steel and AISI 316 stainless steel are iron alloys. Their average alloy composition is basically identical. There are 33 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4404 stainless steel and the bottom bar is AISI 316 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
160 to 360
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 43
8.0 to 55
Fatigue Strength, MPa 220 to 320
210 to 430
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
78
Shear Strength, MPa 420 to 550
350 to 690
Tensile Strength: Ultimate (UTS), MPa 600 to 900
520 to 1180
Tensile Strength: Yield (Proof), MPa 240 to 570
230 to 850

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 950
590
Melting Completion (Liquidus), °C 1440
1400
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 19
19
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 3.8
3.9
Embodied Energy, MJ/kg 52
53
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 26
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 210
85 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 800
130 to 1820
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 32
18 to 41
Strength to Weight: Bending, points 20 to 26
18 to 31
Thermal Diffusivity, mm2/s 4.0
4.1
Thermal Shock Resistance, points 13 to 20
11 to 26

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 16.5 to 18.5
16 to 18
Iron (Fe), % 62.8 to 71.5
62 to 72
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.0 to 2.5
2.0 to 3.0
Nickel (Ni), % 10 to 13
10 to 14
Nitrogen (N), % 0 to 0.1
0 to 0.1
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030