AISI data sheet 309s

GO TO THE PRODUCTS SECTION
o learn about thicknesses and available sizes

ALTERNATIVE NAMES

ASTM	EN	UNS	JIS
309S	1.4833	S30908	SUS 309

CHEMICAL COMPOSITION

309	Chemical Composition - Maximum Value
	C	Mn	Si	Cr	Ni	P	Mo	Other
	0.08	2.0	1.0	18-22	12-14	0.045	2-2.25/td>	N<0.11
	Typical Value
	0.05	0	0	22	13.4	0

MECHANICAL CHARACTERISTICS

Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
			Rockwell B (HR B) max	Brinell (HB) max
550 (625)	230 (355)	30	90	160

END USES

Thanks to the highest contents of Nickel and Chromium, these steel types are highly resistant to corrosion at high temperatures and in greatly reduced environments. The most common uses for this type of steel are: parts (i.e. walls, fans, etc.) for burners and ovens, air preheated elements, automatic systems for thermal treatments in the glass, porcelain, ceramic and petroleum industry.

AISI 309S (thanks to the low carbon content, lower than the corresponding AISI 309 where the maximum level of C is 0.2%) is particularly suitable for welded constructions. The high content of nickel ensures this particular type of steel has a high cold moulding index, and in general less yellowing if subject to use at high temperatures.