Stainless Steel 304 Vs 316

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Stainless Steel 304 Vs 316

Check properties and melting range of SS 304 and 316

Comparison of grade 304 v/s 316

Grade 304 316
Price per kg (US $), FOB Mumbai
Port India
SS 304 plate price 8mm x 1250 x 6000 @ 2.40 US$ SS 316 plate price 8mm x 1250 x 6000 @ 4.32 US$
Chromium 17.50- 19.50 16.50-18.50
Nickel 8.00-10.50 10.00-13.00
Si 1 1
Mo - 2.0-2.5
Carbon 0.0-0.07 0.0-0.07
Mn 2.00 2.00
Melting point 14500C 14000C
Yield strength 205 MPa 200 MPa
Tensile strength 540-750 MPa up to 8mm thick 530-680 MPa up to 8mm thick
Density 8.00 g/cm3 8.00 g/cm3
Thermal expansion 17.2 x 10-6/K 15.9 x 10-6/k
Electrical resistivity 0.72 x 10-6 Ω.m 0.74 x 10-6  Ω.m
Thermal conductivity 16.2 W/m.k 16.3 W/m.k
Modulus of elasticity 193 GPa 193 GPa
Proof stress 230 min up to 8mm thick 240 min up to 8mm thick
Elongation A50 mm 45% min. up to 8mm thick 40% min. up to 8 mm thick
Heat treatment 1010-11200C 1010-11200C
Brinell hardness 215 max HB 149 max HB
Hot working 1149-12600C 1149-12600C
Welding E308L welding electrode E316L-16 welding electrode
UNS S30400 S31600
WORKSTOFF Nr - -
AISE/SAE (American standard) 304 AISI/SAE AISI 316
BS (British Standard) 304S15 316S31
ISO (International organizational for standardization) X5CrNi18.10 X5CrNiMo17122
EN (European standard) -  10088-3
JIS (Japanese industrial standards) SUS304 SUS316
DIN (Germany standard) DIN 1.4301 DIN 1.4401
GB (China standard) - -
CSN (Czech standard) - -
GOST (Russia standard) 08X18H10 -
UNE (Spain standard) F.3551 -
AFNOR (France standard) Z6CN18.09

Z7CND 18-12-03

UNI (Italy standard) X5CrNi1810 -
SIS (Sweden standard) 2332 -
DNV (Norway standard) - -

Characteristics comparison of stainless steel 304 and 316

Characteristics 304 316
Corrosion resistance Good Excellent due to addition of 2.0-2.5 Mo
Salt and chlorides resistance Poor Very good due to molybdenum content
Durability Good Excellent
Resistance to acids, alkalis and chloride pitting Moderate Extremely good
Oxidation resistance Excellent, due to high chromium content Good
Longevity Low High
Heat resistance Up to 425-8600C, continuous may cause corrosion  Up to 8430C and also below 4540C
Expensive Less 40% More, due to high nickel content and superior corrosion resistance
Maintenance Require more attention due to low chemical resistance  Much easier due to high chemical resistance
Machinability Excellent and easy Good, require special tools
Cold working Readily work hardens followed by fabrication method Readily roll-formed or press braked

Stainless steel 304 v/s 316

Stainless steel 304 v/s 316

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