304 astm Cold Rolled Stainless Steel Coils ISO
| Basic Info. |
| Model NO. | 201/304/316/410/430 | Specification | 0.12-4.0mm, 600-1250mm |
| Stock | Stock | Surface Treatment | Bending, Welding, Decoiling, Punching, Cutting |
| Material | 201 301 316 | Origin | Jiangsu Wuxi |
| Transport Package | Industry Standard Packaging or According to Client | | |
DESCRITION
| Product Description. |
| Product Name | Stainless steel coil |
| Material | 200 series: 201, 202 |
| 300 series: 304, 304L, 304H, 310S, 316, 316L, 317L,
321,310S,309S,2205,2507,2520 |
| 400 series: 410, 410S,420, 430, 431, 440A,904L |
| AISI, ASTM, DIN, GB, JIS, SUS,GOST,JIS |
| 0.1-12mm or as your request |
| 1000, 1219, 1500, 1800, 2000mm or as your request |
| Hot rolled, cold drawn |
| Surface | No.1, 2B, BA |
| Applications | Decorative /industrial/building material |
| Trade Terms | EXW, FOB, CFR, CIF |
| Delivery time | Shipped in 7-15 days after payment |
| Package | Standard sea-worthy package or as required |
| SEAWORTHY PACKING | 20ft GP: 5.8m(length) x 2.13m(width) x 2.18m(high) about 24-26CBM |
| 40ft GP: 11.8m(length) x 2.13m(width) x 2.18m(high) about 54CBM
40ft HG: 11.8m(length) x 2.13m(width) x 2.72m(high) about 68CBM |
GENERAL PROPERTIES
Stainless steels are high-alloy steels which have high corrosion
resistance compared to other steels due to the presence of large
amounts of chromium. Based on their crystalline structure, they are
divided into three types such as ferritic, austenitic, and
martensitic steels. Another group of stainless steels are
precipitation-hardened steels. They are a combination of
martensitic and austenitic steels.
Grade 440C stainless steel is a high carbon martensitic stainless
steel. It has high strength, moderate corrosion resistance, and
good hardness and wear resistance. Grade 440C is capable of
attaining, after heat treatment, the highest strength, hardness and
wear resistance of all the stainless alloys. Its very high carbon
content is responsible for these characteristics, which make 440C
particularly suited to such applications as ball bearings and valve
parts.
APPLICATIONS
Typical applications include:
- Rolling element bearings
- Valve seats
- High quality knife blades
- Surgical instruments
- Chisels
SPECIFICATIONS
UNS: ASTM/ASTE S44000
DIN: 1.4125
CORROSION RESISTANCE
Good resistance to the atmosphere, fresh water, foods, alkalies and
mild acids. Best resistance in the hardened and tempered and
passivated condition. A smooth polished surface also assists.
The corrosion resistance of grade 440C approximates that of grade
304 in many environments.
HEAT RESISTANCE
Not recommended for use in temperatures above the relevant
tempering temperature, because of reduction in mechanical
properties by over-tempering.
MACHINING
In the annealed condition this grade is relatively easily machined;
approximately the same as for high speed steel. Chips are tough and
stringy so chip breakers are important. If these grades are
hardened machining becomes more difficult and probably impossible.
Compostion
| Grade | | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| 440C | min.
max. | 0.95
1.20 | -
1 | -
1 | -
0.04 | -
0.030 | 16.00
18.00 | -
0.75 | - | - |
Mechanical Properties
| Tempering Temperature (°C) | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell (HR C) | Impact Charpy V (J) |
| Annealed* | 758 | 448 | 14 | 269HB max# | - |
| 204 | 2030 | 1900 | 4 | 59 | 9 |
| 260 | 1960 | 1830 | 4 | 57 | 9 |
| 316 | 1860 | 1740 | 4. | 56 | 9 |
| 371 | 1790 | 1660 | 4 | 56 | 9 |
| * Annealed properties are typical for Condition A of ASTM A276#
Brinell Hardness is ASTM A276 specified maximum for annealed 440A,
B and C. |
Physical Properties
热处理
退火 – 完全退火 – 850-900°C,缓慢炉冷至约 600°C,然后空冷.亚临界退火 - 735-785°C 和缓慢的炉冷.
硬化 – 加热至 1010-1065°C,然后在温油或空气中淬火.重型截面需要油淬.立即在 150-370°C 回火以获得各种硬度值和机械性能,如附表所示.
由于抗冲击性和耐腐蚀性降低,应避免在 425-565°C 范围内进行回火.在 590-675°C 范围内进行回火会导致硬度降低(产品变得可加工)和高抗冲击性.
焊接
如果需要焊接,请在 250°C 预热,并在焊接后进行完全退火.420 级填料会产生高硬度焊缝(虽然没有 440C 高),但 309 或 310 会产生具有更高延展性的软焊缝.
| FAQ |
| Q1. What are your company's main products ? |
| A1: Our main products are Stainless Steel, Carbon Steel, Galvanized
Steel, Galvalume Steel, Aluminium, PPGI, PPGL products, including
Sheets, Ccoils, Strips, Pipes, Bars and Channels. |
| Q2. What are the advantages of your company ? |
| A2: We guarantee that the quantity and specification of products
are in full compliance with the standards of customer orders. We
support any kinds of test. In addition, We also have more
professional service and competitive price. |
| Q3. How do you control quality ? |
| A3: We provide Mill Test Certificate, also support Third Party
Inspection. |
| Q4. How many coutries you already exported ? |
| A4: Exported to more than 50 countries mainly from Middle East,
Russia, United States, Canada, Italy, Germany, Australia, Egypt,
Chile, Mexico, Venezuela, Argentina, Kuwait, Saudi Arabia, UAE, Sri
Lanka, Indonesia, Bangladesh, Turkey, India, etc. |
| Q5. Can you provide sample ? Do you support OEM ? |
| A5: Yes. Small samples in store can be provided for free.
Customized samples will take about 2-3 days. |
| Q6: What's your payment terms ? |
| A6: By T/T, L/C (30% deposit in advance, balance 70% before
shipment), Western Union, Paypal, or Trade Online. |
If you have any question,please feel free to contact me. Sales
Service 24 hours
we are sure your inquiry or requirements will get prompt attention.
