Alloy Names (as per RoHS specifications)
UNS S30400
Chemical Composition Weight percentage
Chromium [Cr] 18-20%
Phosphorus [P] 0.045% Max.
Nickel [Ni] 8-10.5%
Managnese [Mn] 2%
Silicon [Si] 0.7 % Max.
Carbon [C] 0.07% max.
  • Most familiar and most frequently used alloys in the stainless steel family.
  • Corrosion/ oxidation resistance thanks to the chromium content.
  • Deep drawing quality.
  • Excellent toughness, even down to cryonegic temperatures which are defined as very low temperatures.
  • Low temperature properties responding well to hardening by cold working.
  • Ease of cleaning, ease of fabrication, beauty of appearance.
Main Applications
Food industry : Food processing equipment, particularly in beer brewing, milk processing & wine making, citrus and fruit juice industry.
Domestic tools industry : Because of its ability to withstand the corrosive action of various acids found in fruits, meats, milk, and vegetables,it is used for sinks, tabletops, coffee urns, stoves, refrigerators, milk and cream dispensers, and steam tables. It is also used in numerous other utensils such as cooking appliances, pots, pans, and flatware.
Commercial  : Architectural panelling, railings & trim, Chemical containers, including for transport, Heat Exchangers, Woven or welded screens for mining, quarrying & water filtration, Dyeing industry.
Marine : Because of its high strength and wear resistance, it is also used for nuts, bolts, screws, and other fasteners.


1- Sheet upto 8 mm thick
Grade 304
Tensile Strength (Mpa) 540 - 750
Proof Stress (Mpa) 230 Min
Elongation A50 mm 45 Min %
2- Plate from 8 - 75 mm thick
Grade 304
Tensile Strength (Mpa) 520 - 720
Proof Stress (Mpa) 210 Min
Elongation A50 mm 45 Min %
3- Bar and section up to 160 mm diameter/thickness
Grade 304
Tensile Strength (Mpa) 500 - 700
Proof Stress (Mpa) 190
Elongation A50 mm 45 Min %
Hardness Brinell 215 Max HB
Property Value
Density 8.00 g/cm³
Melting Point 1450°C
Modulus of Elasticity 193 Gpa
Electrical Resistivity 0.072 x 10‾⁶Ω.m
Thermal Conductivity 16.2W/m.k
Thermal Expansion 17.2 x 10‾⁶/K

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