Shandong Longhao Steel Group Co., Ltd.
Shandong Longhao Steel Group Co., Ltd.
Payment Type:L/C,T/T,D/P,D/A,Paypal
Incoterm:FOB,CFR,CIF,EXW,FAS,FCA,CPT,CIP,DEQ,DDP,DDU,Express Delivery,DAF,DES
Min. Order:1 Ton
Transportation:Ocean,Land,Air,Express
Port:Tianjin,Shanghai,Qingdao
Material: 200 Series, 300 Series, 400 Series, 500 Series, 600 Series
Standard: Jis, Aisi, Astm, Gb, Din, En
Place Of Origin: China
Production Process: Hot Rolled, Cold Rolled
Certification: Rohs, Iso, Ibr, Bv, Sgs
Tolerance: ±1%
Processing Service: Bending, Welding, Decoiling, Punching, Cutting
Grade: 304
Application: Manufacture, Construction
Type: Steel Coil
Delivery Time: 15-21 days
Surface Finish: 2B,ba,4k,8k,no.4
Surface: BA/2B/NO.1/NO.3/NO.4/8K/HL/2D/1D
Style: Plate,sheet,coil
Brand: LH
Packaging: Export standard package, or as customers request.
Transportation: Ocean,Land,Air,Express
Supply Ability: 1000tons/month
Port: Tianjin,Shanghai,Qingdao
Payment Type: L/C,T/T,D/P,D/A,Paypal
Incoterm: FOB,CFR,CIF,EXW,FAS,FCA,CPT,CIP,DEQ,DDP,DDU,Express Delivery,DAF,DES
For 304 stainless steel, the Ni element in its composition is very important, directly determines the corrosion resistance of 304 stainless steel and its value.
The most important elements in 304 are Ni and Cr, but they are not limited to these two elements. Specific requirements are specified by product standards. Industry common judgment situation that as long as the Ni content is greater than 8%, Cr content is greater than 18%, it can be considered 304 stainless steel. This is why the industry will call this type of stainless steel 18/8 stainless steel. In fact, the relevant product standards have very clear provisions for 304, and these product standards for different shapes of stainless steel and there are some differences. Below are some common product standards and tests.
To determine whether a material is 304 stainless steel, must meet the requirements of each element in the product standard, as long as there is a does not meet, can not be called 304 stainless steel.
No. Standard/304 C Mn P S Si Cr Ni N Cu 1 ASTM A276/A276M-15 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 2 ASTM A959-11 0.07 2.00 0.045 0.030 1.00 17.5-19.5 8.0-11.0 3 ASTM A240/A240M-15a 0.07 2.00 0.045 0.030 0.75 17.5-19.5 8.0-10.5 4 ASTM A182/A182M-15 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 0.1 5 ASTM A193/A193M-15 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 6 ASTM A269/A269M-15 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 7 ASTM A312/A312M-15a 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 8 ASTM A320/A320M-15a 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 9 ASTM A403/A403M-15 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 10 ASTM A493-09(2013) 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-10.5 0.10 1.00 11 ASTM A554-15a(MT-304) 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0 12 JIS G4303:2012 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-10.5 13 JIS G4304:2012 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-10.5 14 JIS G4305:2012 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-10.5 15 GB/T 20878-2007 0.08 2.00 0.045 0.030 1.00 18.0-20.0 8.0-11.0
It is mainly divided into two types: cold rolled and hot rolled stainless steel coil. Stainless steel cold rolled coil always comes in two surface finishes, namely 2B and BA finish. For hot rolled stainless coils, it is usually No.1 finish. Stainless Steel Coil are inventoried in 200 series, 300 series, 400 series. Different processing processes allow us to finish different complex requirements from customers. Cutting SS coil to specified width, processing the surface, protecting the coil finish by different PVC, PE film.
Chemical Composition
| Grade | C | Si | Mn | Cr | Ni |
| 304 | ≤0.07 | ≤1.00 | ≤2.0 | 18.00~20.00 | 8.00~10.50 |
| 304L | ≤0.030 | ≤1.00 | ≤2.0 | 1 8.00~20.00 | 9.00~13.00 |
| 310S | ≤0.08 | ≤1.00 | ≤2.0 | 24.00~26.00 | 19.00~22.00 |
| 316 | ≤0.08 | ≤1.00 | ≤2.0 | 16.00~18.00 | 10.00~14.00 |
| ≤0.03 | ≤1.00 | ≤2.0 | 16.00~18.00 | 12.00~15.00 | |
| 321 | ≤0.08 | ≤1.00 | ≤2.0 | 17.00~19.00 | 9.00~13.00 |
| 904L | ≤0.02 | ≤1.00 | ≤2.0 | 19.00~23.00 | 23.00~28.00 |
| 2205 | ≤0.03 | ≤1.00 | ≤2.0 | 22.00~23.00 | 4.5~6.5 |
| 2507 | ≤0.03 | ≤1.00 | ≤1.20 | 24.00~26.00 | 6.00~8.00 |
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