304 astm Cold Rolled Stainless Steel Coils ISO
DESCRITION
| Grade | 300 Series, 200 Series, 400 Series, 200 serious & 300 serious & 400 serisou, Other |
| Width | 1000-2000mm, 1000/1219/1500/1524/1800/2000, 1000mm-1500mm, 20mm to 1245mm, 2mm~3500mm |
| Application | Construction, decoration, Kitchenware, Industry, Architecture |
| Standard | ASTM, AISI, JIS, DIN, EN |
| Length | Customer's Request, Customer's Requirement, 1000-6000mm, as customzied, Coil or Customized |
| Type | Coil, Plate, Stainless Steel Coil, Cold Rolled Coil |
| Surface | HL, BA, 2B, BA/2B/NO.1/NO.3/NO.4/8K/HL/2D/1D, 8K |
| Edge | Mill Edge Slit Edge, Smooth Edge, Slit/Mill |
| Technique | Cold Rolled, hot rolled, Cold Drawn Hot Rolled Forged, High Temperature Resistant |
| Product name | Stainless Steel Sheet Coil Plate Sheet, 201, 2205 stainless steel cold strip/coils, 316L, Stainless Steel Sheet/Coil |
| Thickness | 0.3-3.0mm, 0.1mm-100mm, 0.1mm - 3.0mm, 0.20~2.5mm, 0.2-150mm |
| Material | 200 Series/300 Series/400series, 201, Steinless Steel, 200 Series/300 Series/400, 300 Series |
| Price term | CIF CFR FOB EX-WORK, CIF, FOB, CFR, Ex-Work |
| Color | Natural Color, White |
| Name | SS 304 1.4301 2B cold rolled stainless steel coil, Ss Coil, cold rolled annealed 430 stainless steel coil, 316 316L cold rolled stainless steel strip coil |
| Packing | Standard Sea-worthy Packing, Standard Seaworthy Package |
| Item | ISO9001 Standard, ASTM Standard, ss304l coil |
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 products can you offer?
A: We can offer you general steel types like 310S,
316L,304.304L.201,904L, 316H, 316,316L 300and
400 series, and duplex stainless steel like 2205,
2304,2101,2507,etc. 904L, 800H, 600H high-nickel alloy.
Q2. Can you produce the products according to my own drawings?
Yes, we can produce the products according to your drawings that
will be most satisfy you.
Q3. How does your factory do regarding quality control?
Quality is a priority. We always attach great importance to quality
controlling from beginning to end.
