316 Stainless Steel

Uncategorised / Tuesday, May 12th, 2015

Stainless steel grade 316 (also known as 1.4401) is an austenitic grade of stainless steel second only to 304 in commercial importance.

Initially developed for use in paper mills, 316 stainless steel is now typically used in food processing and brewery equipment, chemical/petrochemical equipment, chemical transportation, boat fittings, threaded nuts and bolts, springs, heat exchangers and woven or welded screens for quarrying, mining and water filtration.

Metal Supplies™ supply 316 stainless steel in the following forms (amongst others):



Bar (Round, Flat, Square, Tee)



Grade 316 is the standard molybdenum-bearing grade. The molybdenum gives 316 superior corrosion resistance compared to Grade 304, in particular, higher resistance to crevice corrosion and pitting, especially in chloride environments such as food preparation.  It has excellent forming and welding characteristics and we press brake and roll form 316 stainless into a range of parts for the industrial, architectural, and transportation sectors.

Chemical composition (Bar & Section)

Chemical Element

% Present

Carbon (C)

0.0 – 0.08

Chromium (Cr)

16.50 – 18.50

Molybdenum (Mo)

2.00 – 2.50

Silicon (Si)

0.0 – 1.00

Phosphorous (P)

0.0 – 0.05

Sulphur (S)

0.0 – 0.02

Nickel (Ni)

10.00 – 13.00

Manganese (Mn)

0.0 – 2.00

Iron (Fe)


Properties (Bar & Section)

Physical Property



8.0 g/cm³

Melting Point

1400 °C

Thermal Expansion

15.9 x10^-6 /K

Modulus of Elasticity

193 GPa

Thermal Conductivity

16.3 W/m.K

Electrical Resistivity

0.074 x10^-6 O .m

Mechanical Property


Proof Stress

220 Min MPa

Tensile Strength

520 to 680 MPa

Elongation A50 mm

40 Min %


NOTE: Grade 316 Stainless Steel / 1.4401 also corresponds to the following alloy designations, but may not be a direct equivalent:


EN 58H

UNS S31600