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Stainless Steel 310S

Material: Grade 310S, UNS S31008, 1.4845

310S is a high temperature resistant stainless steel with excellent corrosion resistance and oxidation resistance. Stainless steel 310S has excellent heat resistance and can be used for a long time in high temperature environment without losing its performance. 310S stainless steel is often used in high temperature environment, such as furnaces, furnace pipes, furnace nets, furnace doors and other high temperature equipment manufacturing. JN is 310s stainless steel sheet, bars, pipes, forgings, flanges, pipe fittings manufacturer and supplier.

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Stainless Steel 310S Features：

Stainless Steel 310S (UNS S31008,1.4845) is austenitic chromium-nickel heat resistant stainless steel with good oxidation resistance and corrosion resistance, because of the higher percentage of chromium and nickel, 310S has much better creep strength, can continue to operate at high temperatures, and has good high temperature resistance.

310S is a high temperature resistant stainless steel with excellent corrosion resistance and oxidation resistance. Stainless steel 310S has excellent heat resistance and can be used for a long time in high temperature environment without losing its performance. 310S stainless steel is often used in high temperature environment, such as the manufacture of high temperature equipment such as furnaces, furnace pipes, furnace nets, furnace doors, etc.

SUS310S is an austenitic heat-resistant stainless steel in Japanese Standard (JIS), commonly known as high temperature resistant stainless steel. This material contains a higher proportion of chromium and nickel, which enables it to maintain stable performance in high temperature environments of 800 to 1000°C, and is a more expensive member of the stainless steel family.

JN is alloy 310s supplier and manufacturer.

Stainless Steel 310S Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	GOST	EN	BS
310S	1.4845	S31008	SUS310S	20Ch23N18	X8CrNi25-21	310S16

Stainless Steel 310S Properties

Fabrication

Fabrication Grades 310S are forged in the temperature range 975 - 1175°C. Heavy work is carried out down to 1050°Cand a light ﬁnish is applied to the bottom of the range. After forging annealing is recommended to relieve all stresses from the forging process. The alloys can be readily cold formed by standard methods and equipment.

Machinability

Machinability Grades 310SS are similar in machinability to type 304. Work hardening can be a problem and it is normal to remove the work hardened layer by using slow speeds and heavy cuts, with sharp tools and good lubrication. Powerful machines and heavy, rigid tools are used.

Welding

Welding Grades 310S are welded with matching electrodes and ﬁller metals. The alloys are readily welded by SMAW (manual), GMAW (MIG), GTAW (TIG) and SAW. Electrodes to AWS A5.4 E310-XX and A 5.22 E310T-X, and ﬁller metal AWS A5.9 ER310 are used. Argon is shielding gas. Preheat and post heat are not required, but for corrosion service in liquids full post weld solution annealing treatment is essential. Pickling and passivation of the surface to remove high temperature oxides are essential to restore full aqueous corrosion resistance after welding. This treatment is not required for high temperature service, but welding slag should be thoroughly removed.

Heat Treatment

Heat Treatment Type 310S are solution annealed by heating to temperature range 1040 -1065°C, holding at temperature until thoroughly soaked, then water quenching.

Heat Resistance

Grades 310S have good resistance to oxidation in intermittent service in air up to 1035°Cand 1050°Cin continuous service. The grade is resistant to oxidation, sulphidation and carburisation.

Stainless Steel 310S Chemical Composition

Grade	C≤	Mn	P≤	S≤	Si≤	Cr	Ni
310S	0.08	2	0.045	0.03	1.5	24.0-26.0	19.0-22.0

310S Mechanical Properties

Tensile, min, ksi[MPa]	Yield, min, ksi[MPa]	Elongation, %(min)	Hardness, HB（max）
75【515】	30【205】	40	192

310S Physical Properties

Grade	06Gr25Ni20
Density	7.98 g/cm³
Melting point	1397-1453℃
Specific heat	0.5 KJ/(Kg*K)
Thermal conductivity	100℃	16.3
Linear expansion coefficient	500℃	21.5
Resistivity	0-100℃	14.4
Longitudinal elastic modulus	0-500℃	17.5
Magnetic properties	20℃	0.78 Ω*mm²/m
Density	20℃	200 kN/mm²
Melting point	Slightly magnetic after cold working

310S Stainless Steel Specification

Product	Standard	Show
310S Stainless Steel Pipe	ASTM A312
310S Stainless Steel Tube	ASTM A269 / ASTM A213
310S Stainless Steel Sheet/Plate	ASTM A240
310S Stainless Steel Bars	ASTM A276 / ASTM A479
310S Stainless Steel Forging	ASTM A182
310S Stainless Steel Flange	ASTM A182
310S Stainless Steel BW Fittings	ASTM A403