310/310S Stainless Steel - Qinghe Steel

   

Introduction

310 stainless steel is an austenitic stainless steel developed for use in high temperature corrosion resistant applications. Typically used in coal combustors, radiator tubes, steam boilers, thermowells, burners, combustion chambers, food processing equipment, and cryogenic hardware. 310S is the low carbon version of the stainless steel. It is utilized for ease of fabrication.

310/310s Stainless Steel Properties

Corrosion Resistance: 310/310S stainless steel has excellent corrosion resistance in a wide range of environments. It can withstand exposure to water, chemicals, and other corrosive substances without corroding or rusting.

Strength: 310/310S stainless steel has high tensile strength and can withstand heavy loads without bending or breaking. It has a minimum tensile strength of 515 MPa and a minimum yield strength of 205 MPa.

Ductility: 310/310S stainless steel has good ductility, which means that it can be easily formed and shaped without cracking or breaking. This property makes it ideal for applications that require complex shapes or designs.

Weldability: 310/310S stainless steel is easily weldable, making it an excellent choice for applications that require welding. It can be welded using common welding techniques, such as TIG, MIG, and resistance welding.

Magnetic Properties: 310/310S stainless steel is non-magnetic, which makes it suitable for applications that require non-magnetic properties.

Heat Resistance: 310/310S stainless steel has excellent heat resistance and can withstand high temperatures without losing its strength or corrosion resistance. It can withstand temperatures up to 1150°C (2100°F) without undergoing any significant change in its properties.

Alloy Designations of 310/310s Stainless Steel

Stainless steel 310 approximate comparison table:

GB	ISC	CNS	JIS	ASTM	UNS	ISO	DIN EN/DIN	NF EN/NF	EN	GOST	BS EN/BS
20Cr25Ni20 ( 2Cr25Ni20 )	S31020	SUH 310	SUH 310	310	S31000	X15CrNi 25-21	X15CrNiSi 25-20	Z15CNS 25-20	X15CrNi 25-20	20Х25Н20С2	310S31

Stainless steel 310s approximate comparison table:

GB	JIS	ASTM	UNS	ISO	DIN EN/DIN	NF EN/NF	EN	GOST	BS EN/BS
1Cr25Ni20Si2, 20KH23N18	SUS310S, 310S24, 310S31	310S	S31008	H16	X8CrNi25-21	Z8CN25-20	X8CrNi25-21	10KH23N18	310S16

Chemical Composition of 310/310s Stainless Steel

Grades	uns	Element	C	Si	Mn	P	S	Cr	Ni
310S (0Cr25Ni20)	S31008		0.08	1	2	0.045	0.03	24 - 26	19 - 22
310	S31000		0.25	1.5	2	0.045	0.03	24 - 26	19 - 22

Mechanical Properties of 310/310s Stainless Steel

Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Toughness	Density	Melting Point
≥515-1035	≥205	≥40	≤210	7.93	1398~1454

Machinability

Machinability Grades 310/310S stainless steel 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 of Stainless Steel 310/310s

Welding Grades 310/310S 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.

Applications of 310/310s Stainless Steel

• Cryogenic Components
• Food Processing
• Furnaces – burners, doors, fans, piping and recuperators
• Fluidized Bed Furnaces – coal combustors, grids, piping, wind boxes
• Ore Processing/Steel Plants – smelter and steel melting equipment, continuous casting equipment
• Petroleum Refining – catalytic recovery systems, flares, recuperators, tube hangers
• Power Generation – coal gasifier internals, pulverized coal burners, tube hangers
• Sintering/Cement Plants – burners, burner shields, feeding and discharging systems, wind boxes
• Thermal Processing – annealing covers and boxes, burner grids, doors, fans, muffles and retorts, recuperators, walking beams

What Stainless Steel Grades We Have!

Qinghe Steel is a full line supplier and processer of 310 / 310S stainless steel coil, sheet, plate, bar, and strip products. We stock many grades of stainless steel, including 300 and 400 series stainless, annealed and in various tempers and high temperature grades, for shipments worldwide. View our steel center here

Contact us today to discuss stainless steel for your project needs.

Read More:

Comparing Martensitic Stainless: 309 vs 310 Stainless Steel Grades

FAQ

What forms of 310/310S Stainless Steel are available?

• Sheet
• Plate
• Bar
• Pipe & Tube
• Fittings
  • Elbows, tees, stub-ends, returns, caps, crosses, reducers, pipe nipples, etc.
• Weld Wire (AWS E310-16 or ER310)

What are the characteristics of 310/310S Stainless?

• Oxidation resistance to 2000°F
• Moderate strength at high temperature
• Resistance to hot corrosion
• Strength and toughness at cryogenic temperatures

Can 310 and 310s stainless steel plate be polished?

Yes, 310 and 310S can be polished to a wide variety of finishes.

Can 310 and 310s be multi-certified?

It is possible to multi-certify 310 and 310s stainless steel plate, however, it does depend on the chemical, mechanical and physical properties of the stainless steel plate to be certain.

Can 310 and 310s stainless steel plate be heat treated?

Heat treating these grades of stainless steel plate do not result in a stronger, more durable product.