Sus310s 2b Stainless Steel Plate

What Is SUS310S 2B Stainless Steel Plate?

SUS310S is a high-chromium, high-nickel austenitic stainless steel specifically designed for continuous high-temperature service (up to 1100°C).A 2B finish provides a smooth, reflective, easy-to-clean surface suitable for heat-exchangers, furnace components, petrochemical equipment, and industrial process lines.

 

 

What is 2B surface treatment?

2B surface treatment is a surface finishing method for stainless steel. It refers to a process where, after cold rolling, heat treatment, and pickling, the surface is finished with precision rolling to achieve a smooth, matte (frosted) finish. It is a very common surface treatment type, with low surface roughness, making it easy to perform secondary processing to obtain a brighter or brushed finish. It is frequently used in chemical, construction, medical equipment, and kitchenware industries.

SUS310S 2B Stainless Steel Plate Specification 

Item	Range
Thickness	1.0 – 20 mm
Width	1000 / 1219 / 1500 mm
Length	2000 / 2438 / 3000 mm (custom available)
Finish	2B, BA, No.1, No.4
Standards	JIS G4304, ASTM A240, EN 1.4845
Certification	ISO 9001, SGS, Mill Test Certificate (EN 10204 3.1)
Processing	Cutting, bending, welding, polishing

 

SUS310S Chemical Composition (Typical %)

Element	Cr	Ni	C	Mn	Si	P	S	Fe
SUS310S	24–26	19–22	≤0.08	≤2.0	≤1.5	≤0.045	≤0.03	Balance

 

Mechanical Properties of SUS310S (Room Temperature)

Property	SUS310S
Tensile Strength	520–750 MPa
Yield Strength	≥205 MPa
Elongation	≥40%
Hardness	≤95 HRB
Density	7.98 g/cm³
Max Continuous Service Temp	~1100°C

 

Is SUS310S better than SUS304 for high temperature?

Yes. SUS310S performs significantly better than SUS304 in high-temperature environments, mainly because its high chromium (24–26%) and high nickel (19–22%) content give it much stronger oxidation resistance. SUS310S can operate continuously at 1100°C and intermittently at around 1050°C, while SUS304 is generally limited to ~870°C before experiencing scaling and strength loss. For any furnace, burner, or heat-treatment application above 900°C, SUS310S is clearly the more reliable choice.

 

 What is the maximum temperature resistance of SUS310S?

SUS310S offers one of the highest temperature limits among commercial stainless steels, with a continuous service temperature of approximately 1100°C and an intermittent service temperature of 1050°C, depending on atmosphere and loading conditions.

 

Is SUS310S magnetic?

SUS310S is essentially non-magnetic in the annealed condition because it is a fully austenitic stainless steel with high Ni content. However, slight magnetism may appear after cold working or heavy forming, as deformation can create small amounts of martensitic structure. In general, its magnetic permeability remains low-typically μr ≈ 1.02–1.05-much lower than ferritic grades such as 430.

 

SUS310S 2B Stainless Steel Plate price per kg

Current industry pricing (reference only):

Material	Market Price (USD/kg)	Notes
SUS310S 2B Plate	$4.60 – $6.30/kg	High Ni/Cr content; heat-resistant grade
SUS304 2B	$2.00 – $2.70/kg	General-purpose steel
SUS316L 2B	$3.50 – $5.20/kg	Mo-alloy corrosion-resistant steel

310S is one of the highest-priced stainless steels because of Ni/Cr alloy cost and high-temperature application requirements.

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In addition to leveling (cross-cutting) and slitting (long-cutting), GNEE also offers processing services such as oil grinding, 8K polishing, embossing, bending, rolling, and laser cutting to meet diverse customer needs, as well as export packaging and boxing services.

Regarding packaging and transportation, all stainless steel sheets undergo moisture-proof treatment and are securely sealed using wooden crates, pallets, or bubble wrap. Standard containers or dedicated transport vehicles are used during transportation to ensure the integrity and safety of the goods during transit. We provide global shipping, with a typical delivery cycle of 7-15 days from production to delivery, ensuring on-time delivery to our customers.