Boiler HRC Hot Rolled Coil mild steel sS400 Q235 Q345 0.2mm - 4mm
Thickness
The annealed structure of low carbon steel is ferrite and a little
pearlite, with low strength and hardness, good plasticity and
toughness. Therefore, its cold formability is good and can be used
for cold forming methods such as crimping, bending and stamping.
This kind of steel has good weldability. Low carbon steel with very
low carbon content has very low hardness and poor machinability,
and normalizing treatment can improve its machinability.
Low carbon steel has a great aging tendency, both quenching aging
tendency and deformation aging tendency. When the steel is cooled
from high temperature, the carbon and nitrogen in the ferrite are
in a supersaturated state, and it can slowly form the carbon and
nitrogen of iron at room temperature, so the strength and hardness
of steel are improved, and the plasticity and toughness are
reduced, this phenomenon is called quenching aging. Low carbon
steel will produce aging even if it is not hardened and air cooled.
The carbon and nitrogen atoms in ferrite interact elastically with
the dislocation, and the carbon and nitrogen atoms gather around
the dislocation line. This combination of carbon and nitrogen atoms
and dislocation lines is called a Corleone air mass. It will
increase the strength and hardness of steel and decrease the
plasticity and toughness, this phenomenon is called deformation
aging.
Product Details
| Width | 600mm-3000mm or as required | Thickness | 0.1mm-300mm or as required |
| Technique | Hot/Cold Rolled | Standard | AISI, ASTM, DIN, JIS, GB, JIS, SUS, EN, Etc. |
| Surface treatment | Clean, blasting and painting according to customer requirement | Certificate | API,ISO,SGS,BV,CE etc |
| Package | Standard export seaworthy package,suit for all kinds of transport,
or as required. | Trade term | Ex-Work,FOB,CNF,CFR,CIF,etc |
1. Advantages:
| 1. Reasonable price with excellent quality |
| 2. Abundant stock and prompt delivery |
| 3. Rich supply and export experience, sincere service |
2. Material:
A36, A53, ASTM A106, JIS S400, Q235B, Q235C, Q235D, Q345E, Q345,
Q390B, Q390C, Q390D, Q390E, Q420, Q420B, Q420C, Q420D, Q420E, Q460,
Q460D, Q500C, Q500D, Q550C, Q550D, Q550E, Q620C, Q620D, Q620E,
Q690A, Q690B, Q690C, Q690D, Q690E, Q690D, Q690C, Q890C, Q890D,
16Mo3, 16MnL, 16MnR , 16Mng, 16MnDR
3. Chemical Composition:
| Grade | Rank | Chemical Composition( %) |
| C | Mn | Si | S | P |
| Q215 | A | 0.09~0.15 | 0.25~0.55 | ≤0.3 | ≤0.05 | ≤0.045 |
| B | ≤0.045 |
| Q235 | A | 0.14~0.22 | 0.30~0.65 | ≤0.3 | ≤0.05 | ≤0.045 |
| B | 0.12~0.20 | 0.30~0.70 | ≤0.045 |
| C | ≤0.18 | 0.35~0.80 | - | ≤0.04 | ≤0.04 |
| D | ≤0.17 | ≤0.035 | ≤0.035 |
| Q255 | A | 0.18~0.28 | 0.40~0.70 | ≤0.3 | ≤0.05 | ≤0.045 |
| B | ≤0.045 | |
| Q275 | | 0.28~0.38 | 0.50~0.80 | ≤0.35 | ≤0.05 | ≤0.045 |
4. Standard:
| Standard | Grade | General Size | Delivery Condition |
| ASTM A36 | A36/A36-B | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| ASTM A283 | A283-B/A283C | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| ASTM A572 | A572Gr50-B/A572Gr42-B | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| ASTM A515 | A515Gr70 | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| ASTM A516 | A516Gr70 | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| JIS G 3101 | SS400-B | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| JIS G3136 | SN400B | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| EN10025-2:2004 | S235JR-S355K2+N | 5-20 * 2300-2500 * C | Boron added or Black Condition |
| EN10025-5:2004 | S355J2W/S355K2W | 5-20 * 2300-2500 * C | Boron added or Black Condition |
5. Packing:
Standard stainless steel shipping packaging or as customer
required.
