

Product Name | High Hardness JIS Standard 440A 440B 440C Stainless Steel Strip for Cutting Tools |
Thickness | 0.002mm-4mm |
Width | As requirement |
Length | 2000 mm , 2438 mm , 3000 mm , 6000 mm OR as requirement |
Finish | No.1 , 2B , HL , NO.4 , BA , SB ,1D , 2D , 2C , 2E , NO.5 , NO.9 |
Technical | Hot rolled,Cold rolled |
Standard | ASTM 240 , A480 , JIS G 4304 , EN 10088-2 |
MOQ | 5 ton |
Certification | MTC Type 3.1 , PMI , CO |
Delivery Time | 7 days if have stock |
What is 440 Stainlesss Steel?Stainless steel grade 440A is a high carbon martensitic stainless steel that possesses good strength, moderate corrosion resistance, and excellent hardness and wear resistance.
Stainless steels are available in three different groups based on their crystalline structure. These groups include martensitic, austenitic and ferritic. The combination of martensitic and ferritic steels forms a fourth group of stainless steels known as precipitation-hardened steels.
Grade 440B stainless steel is a high carbon martensitic stainless steel containing good strength, moderate corrosion resistance and ability to obtain and maintain wear resistance and excellent resistance.
440C is a 400 series stainless steel, and is the highest carbon content from 400 stainless steel series. It is usually heat treated to reach hardness of 58-60 HRC. It is a bearing steel, and used in rolling contact stainless bearings, e.g. ball and roller bearings. It is also used to make knife blades. 440C can be oil quenched to achieve maximum hardness.
Stainless steel grade and chemical composition(%) |
Grade | C | Si | Mn | P ≤ | S ≤ | Cr | Ni | Mo | N |
201 | ≤0.15 | ≤1.00 | 5.5-7.5 | 0.06 | 0.03 | 16-18 | 3.5-5.5 | - | ≤0.25 |
202 | ≤0.15 | ≤1.00 | 7.5-10.0 | 0.06 | 0.03 | 17-19 | 4-6 | - | ≤0.25 |
301 | ≤0.15 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 16-18 | 6-8 | - | ≤0.10 |
304 | ≤0.08 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 18-20 | 8-10.5 | - | - |
304L | ≤0.03 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 18-20 | 8-12 | - | - |
309 | ≤0.2 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 22-24 | 12-15 | - | - |
309S | ≤0.08 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 22-24 | 12-15 | - | - |
310 | ≤0.25 | ≤1.50 | ≤2.00 | 0.045 | 0.03 | 24-26 | 19-22 | - | - |
310S | ≤0.08 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 24-26 | 19-22 | - | - |
316 | ≤0.08 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 16-18 | 10-14 | 2-3 | - |
316L | ≤0.03 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 16-18 | 10-14 | 2-3 | - |
316H | 0.04-0.1 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 16-18 | 10-14 | 2-3 | - |
316Ti | ≤0.08 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 16-18 | 10-14 | 2-3 | ≤0.10 |
317 | ≤0.08 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 18-20 | 11-15 | 3-4 | - |
317L | ≤0.03 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 18-20 | 11-15 | 3-4 | - |
321 | ≤0.08 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 17-19 | 9-12 | - | ≤0.10 |
321H | 0.04-0.1 | ≤1.00 | ≤2.00 | 0.045 | 0.03 | 17-19 | 9-12 | - | ≤0.10 |
409 | ≤0.08 | ≤1.00 | ≤1.00 | 0.045 | 0.03 | 10.5-11.7 | ≤0.50 | - | - |
410 | ≤0.15 | ≤1.00 | ≤1.00 | 0.04 | 0.03 | 11.5-13.5 | ( ≤0.75) | | |
420 | ≥0.15 | ≤1.00 | ≤1.00 | 0.04 | 0.03 | 12-14 | - | - | - |
430 | ≤0.12 | ≤1.00 | ≤1.00 | 0.04 | 0.03 | 16-18 | - | - | - |







Q1: Do you accept the trial order ?
A1: Yes,if we have the exactly size in stock.we can delivery even 1 piece/meter .
Q2: Can I have free sample before making orders?
A2: Yes,we can supply free sample as requirement,but buyer needs to pay the freight charges ,the freight fee will return to buyer after making order.
Q3: How do you control the quality ?
A3: MTC and PMI will be sent before shipment,any 3rd party inspection if need .
Q4: How about your delivery time ?
A4: Generally delivery time is 15 working days .
Q5: How can I quickly get the price list ?
A5: Directly click "chat now" or send us email with detail specifications,you will get the official price list in 1 hour .