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,DDP,DDU
Min. Order:1 Ton
Transportation:Ocean,Land,Air,Express
Port: Qingdao,Tianjin,Shanghai
Model No.: S355JR
Brand: LH
Standard: Aisi, Astm, Gb, Jis, Bs, Din
Place Of Origin: China
Production Process: Hot Rolled
Tolerance: ±1%
Processing Service: Punching, Cutting, Bending, Decoiling, Welding
Packaging: Standard seaworthy packing
Productivity: 50K+ Tons/Months
Transportation: Ocean,Land,Air,Express
Place of Origin: China
Supply Ability: 50k tons per month
Certificate: SGS
Port: Qingdao,Tianjin,Shanghai
Payment Type: L/C,T/T,D/P,D/A,Paypal
Incoterm: FOB,CFR,CIF,EXW,DDP,DDU
S235JR MS Steel Sheet
S235JR steel sheet is the European standard of non-alloy structural steel, equivalent to the national standard of Q235B, that is, low carbon carbon structural steel, used for welding, bolted connection, riveting structure more.
S235JR Chemical Composition
| EN 10025 | C(max) | Si max | Mn% max | P max | S% max | Cu% max | N% max | ||
| t≤16 | 16 | t>40 | |||||||
| S235JR | 0.17 | 0.17 | 0.2 | - | 1.4 | 0.035 | 0.035 | 0.55 | 0.012 |
| S235J0 | 0.17 | 0.17 | 0.17 | - | 1.4 | 0.03 | 0.03 | 0.55 | 0.012 |
| S235J2 | 0.17 | 0.17 | 0.17 | - | 1.4 | 0.025 | 0.025 | 0.55 | - |
S235JR Mechinical Properties
| EN 10025-2 | Minimum yield strength MPa Thickness(mm) | Tensile strength Thickness(mm) | ||||||||||||
| ≤16 | 16 | 40 | 63 | 80 | 100 | 150 | 200 | 250 | t<3 | 3≤t≤100 | 100 | 150 | 250 | |
| S235JR | 235 | 225 | 215 | 215 | 215 | 195 | 185 | 175 | - | 360-510 | 360-510 | 350-500 | 340-490 | - |
| S235J0 | 235 | 225 | 215 | 215 | 215 | 195 | 185 | 175 | - | 360-510 | 360-510 | 350-500 | 340-490 | - |
| S235J2 | 235 | 225 | 215 | 215 | 215 | 195 | 185 | 175 | 165 | 360-510 | 360-510 | 350-500 | 340-490 | 330 to 480 |
What Is Mild Steel Sheet?
Steel is mostly composed of iron. Depending on different amounts of carbon content, there are low-carbon steel (also called mild steel or plain carbon steel), medium-carbon steel, and higher carbon steel.
The following chart shows the differences and characteristics of the three steel types
|
| Carbon content (wt. %) | Microstructure | Characteristics | Examples |
| Low-carbon steel (Mild steel) | Less than 0.25 | Pearlite, ferrite | Soft, cheap, very ductile, easy to machine and weld | AISI105, AISI 316L, Q195, Q215, Q235, 08F, 15Mn, 20Mn |
| Medium-carbon steel | 0.25 to 0.60 | Martensite | Reasonably ductile, hard, strong and not easy to harden | AISI 409, 45#, 40CR, 20CR, SCM 435 |
| High-carbon steel (carbon tool steel) | 0.60 to 1.25 | Pearlite | Very hard, strong, unyielding, hard to machine and weld | T7, T7A, T8Mn, T8MnA, AISI440C |
From the above chart, mild steel is a steel type that contains 0.05%-0.25% carbon. Due to its malleability and ductility, the material is easy to form and machine. Mild steel parts are generally very suitable for stamping, forging. Mild steel is widely used in tools, automotive body parts, construction, and infrastructure.
Mechanical Properties Of Mild Steel
As you could judge from the chart above, mild steel has lower carbon content than other carbon steel. The mild steel has a mere carbon content of 0.25%.
Mild steel has great impact strength, great ductility and weldability, good malleability with cold-forming possibilities. With these properties, CNC-machining mild steel is easier than CNC-machining other types of steel.
The major disadvantage of mild steel is that it has a relatively low tensile strength, which means it’ll break more easily than other types of steel.
Fortunately, a heat-treatment process called carburizing can be used to improve tensile strength. Carburizing is a surface-hardening process that heats the mild steel to a certain temperature then cools down the steel, which makes the steel hardened on the surface when keeping the core of the steel soft and ductile.
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