304 Vs 316 Stainless Steel Specification and Properties

Check properties and melting range of SS 304 and 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 惟.m	0.74 x 10-6 聽惟.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)	-	聽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	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聽	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聽	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