440B stainless steel is a high-performance stainless steel with properties and uses similar to 9Cr18 stainless steel, but it has better heat strength and tempering stability due to the addition of molybdenum (Mo) and vanadium (V).
440B stainless steel has higher hardness and better wear resistance. It is harder than 440A stainless steel and has higher toughness than 440C stainless steel. However, when polishing, its disadvantages are that it is relatively sticky and heats up quickly, but it is more viscous than 440C stainless steel. Any carbon steel is easier to sharpen and cutting with a hand saw is much easier.
Specifications | In stock, can be customized according to customer requirements |
Form | Plate, rod, roll, tube, strip, wire |
Classification | Precipitation Hardened Steel |
Type | 440B stainless steel seamless pipe |
Grade | 201,304,310,316,316l,317l,321 ,409,410,430,410s,904l,2205 etc. |
Surface Finish | 2B, BA,4K,8K, NO.1,2D,3#, HL |
Size Range | From 4mm to 800mm800mm |
Wall Thickness Range | From 1mm to 150mm (SCH10-XXS) |
Length Options | 4000mm, 5800mm, 6000mm, 12000mm, or as required. |
Standard | AISI,ASTM,DIN,JIS,GB,JIS,SUS,EN,etc |
Type | Round, square, rectangular, hexagonal, flat, angle |
Technique | Cold rolled, hot rolled |
MOQ | 1 ton, We can accept sample order. |
Delivery port: | Shanghai, Tianjin, Qingdao, Ningbo, Guangzhou, etc. |
Packaging Detail | Standard export packaging, various transportation, according to customer needs |
Grade | C | Si | Mo | Cr | Ni | P | S | Mn |
440b | 0.85～0.95 | ≤1.00 | ≤0.75 | 16.00～18.00% | ≤0.60 | ≤0.035 | ≤0.030% | ≤1.00 |
Alloy | Specific heat capacity (0~100℃) | Thermal conductivity (100℃) | Resistivity (20℃) | Longitudinal elastic modulus (20℃) | Density (20℃) | Magnetism |
solid solution | 0.46 kg/(kg·K) | 29.3 W/(m·K) | 0.65 Ω·mm²/m | 211 GPa | 7.7 kg/dm³ | yes |
Grade | Annealing/℃ | Quenching/℃ | Tempering/℃ | HBS | HBR |
440b | 800～920 slow cooling | 1010～1070 oil cooling | 100～180 fast cooling | ≤255 | ≥56 |
SUS440Bdelivery status: Generally delivered in a heat-treated state. 440B is suitable for cutting tools, measuring tools, bearings and valves.
440B stainless steel pipeis widely used in many fields due to its excellent performance:
Measuring Tools: Due to its high hardness and precision, 440B stainless steel is often used to manufacture measuring tools and measuring tools to ensure accurate measurements.
Knives: The high strength, hardness and corrosion resistance of 440B stainless steel make it an ideal choice in blade and blade manufacturing.
Parts: Used to manufacture parts that need to withstand friction and work in corrosive media, such as valves and other mechanical parts.
The excellent properties of440B stainless steel pipemake it a reliable choice in applications requiring high strength and corrosion resistance, especially in industrial and manufacturing fields. Its addition of molybdenum and vanadium improves heat strength and temper stability, allowing it to perform well under harsh conditions.
The manufacturing process of stainless steel and alloys involves multiple steps to transform raw materials into flat,rectangular sheets or plates made of stainless steel and alloys. Here are a few key steps for stainless steel and alloys:
Molten stainless steel and alloys are cast into large ingots or billets through a casting process.
During the hot rolling process,the thickness of the steel ingot is gradually reduced and elongated to form long strips or coils.
Annealing involves heating stainless steel and alloys to a specific temperature and then slowly cooling it.
Cold rolling is carried out through rolling mills to reduce thickness to meet customer specifications.
Wuxi Walmay Metal Co,Ltd is a comprehensive processing group of Alloy Steel、Forged Parts Fitting、Titanium Alloy、Stainless Steel、Special Welding Wireseries， and more than 800 specifications.
Our group has been engaged in the domestic and global market for more than ten years with rich steel experience and can offer professional advice for customers inapplications with different materials.
Machine cutting
Sheet cutting
plasma cutting
Dynamic waterjet cutting
sawing
Plank leveling
polishing
laser cutting
laser cutting
production cutting
Long product cutting
Bar and structural cutting
polishing
Heat treatment and annealing: Wuxi Walmay Metal can heat treat certain 400 series stainless steels.
Material Reliability Identification (PMI): Wuxi Walmay Metal can complete this testing in-house.
Ut Testing: Ultrasonic testing (UT) uses high-frequency sound energy to inspect and measure stainless steel products.
Our professional sales team answers your questions within 24 hours.
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