Tianjin Dongmao Special Steel Metal Material Trade Co., Ltd.
Main products:Steel Pipe,Steel Plate,Galvanized Plate
Products
Contact Us
  • Contact Person : Ms. zhang Sai
  • Company Name : Tianjin Dongmao Special Steel Metal Material Trade Co., Ltd.
  • Tel : 86-22-26614461
  • Fax : 86-22-26914461
  • Address : Tianjin,Tianjin,Room 401, Door 2, Building 1, Tianyang Apartment, Beichen District
  • Country/Region : China
  • Zip : 300400

SS400 carbon steel plate and sheet hot rolled mild steel plates with 20mm thick steel plate

SS400 carbon steel plate and sheet hot rolled mild steel plates with 20mm thick steel plate
Product Detailed
1. SS400 carbon steel plate and sheet hot rolled mild steel plates with 20mm thick steel plate 2. cut to size flat steel plate

1. DESCRIPTION OF GOODS: SS400 carbon steel plate and sheet hot rolled mild steel plates with  20mm thick steel plate

        One: Hot Rolled steel plates: Hot rolling is a metalworking process that occurs above the recrystallization temperature of the material. After the grains deform during processing, they recrystallize, which maintains an equiaxedmicrostructure and prevents the metal from work hardening. The starting material is usually large pieces of metal, like semi-finished casting products, such as slabs, blooms, and billets. If these products came from a continuous casting operation the products are usually fed directly into the rolling mills at the proper temperature. In smaller operations the material starts at room temperature and must be heated. This is done in a gas- or oil-fired soaking pit for larger workpieces and for smaller workpieces induction heating is used. As the material is worked the temperature must be monitored to make sure it remains above the recrystallization temperature. To maintain a safety factor a finishing temperature is defined above the recrystallization temperature; this is usually 50 to 100 °C (90 to 180 °F) above the recrystallization temperature. If the temperature does drop below this temperature the material must be re-heated before more hot rolling.

       Hot rolled metals generally have little directionality in their mechanical properties and deformation induced residual stresses. However, in certain instances non-metallic inclusions will impart some directionality and workpieces less than 20 mm (0.79 in) thick often have some directional properties. Also, non-uniformed cooling will induce a lot of residual stresses, which usually occurs in shapes that have a non-uniform cross-section, such as I-beams and H-beams. While the finished product is of good quality, the surface is covered in mill scale, which is an oxide that forms at high-temperatures. It is usually removed via pickling or the smooth clean surface process, which reveals a smooth surface.Dimensional tolerances are usually 2 to 5% of the overall dimension.

Hot rolled mild steel seems to have a wider tolerance for amount of included carbon than cold rolled, making it a bit more problematic to use as a blacksmith. Also for similar metals, hot rolled seems to typically be less costly.

Steel Production: When iron is smelted from its ore by commercial processes, it contains more carbon than is desirable. To become steel, it must be melted and reprocessed to reduce the carbon to the correct amount, at which point other elements can be added. This liquid is then continuously cast into long slabs or cast into ingots. Approximately 96% of steel is continuously cast, while only 4% is produced as cast steel ingots.

The ingots are then heated in a soaking pit and hot rolled into slabs, blooms, or billets. Slabs are hot or cold rolled into sheet metal or plates. Billets are hot or cold rolled into bars, rods, and wire. Blooms are hot or cold rolled into structural steel, such as I-beams and rails. In modern foundries these processes often occur in one assembly line, with ore coming in and finished steel coming out. Sometimes after a steel's final rolling it is heat treated for strength, however this is relatively rare.

STEEL GRADES: Carbon steel, composed simply of iron and carbon, accounts for 90% of steel production.High strength low alloy steel has small additions (usually < 2% by weight) of other elements, typically 1.5% manganese, to provide additional strength for a modest price increase.

2. SS400 carbon steel plate and sheet hot rolled mild steel plates with  20mm thick steel plate

we have SS400 steel plate on STOCK. STOCK SIZES AS BELOW.

SS400pass09H-24568-50522.00243860961
SS400-Kpass09Z-06510-0896.001560760011
SS400pass09H-06187-50710.002250120601
SS400pass09H-26438-50110.00243860961
SS400pass09H-41062-51110.002370120301
SS400pass09H-32613-51810.00243860961
SS400-Wpass09Z-75054-09211.00210075001
SS400pass09Z-78638-03016.00195053201
SS400-Hpass09H-60998-50425.00276057001
SS400-Hpass09H-53206-50325.00276057001
SS400pass09H-74809-50410.00250080001
SS400-Hpass09Z-82295-09916.00200060001
SS400-Hpass09Z-82295-09916.00200060001
SS400-Hpass09H-66653-50232.00240058001
SS400pass09H-72235-50236.00301158711
SS400pass09H-72235-50236.00301158711
SS400-Hpass10H-08209-50350.00240047001
SS400-Hpass10H-08209-50350.00240047001
SS400pass10Z-01878-09812.702040120301
SS400pass10H-20892-0340.00200096001
SS400pass09Z-82188-01722.00190075001
SS400pass10Z-61043-00222.00190075001
SS400-Hpass10H-12896-50132.00240058001
SS400-Hpass10H-12896-50532.00240058001
SS400-Hpass10H-12896-50532.00240058001
SS400-Hpass10H-12897-0132.00240058001
SS400-Hpass10H-25541-0140.00240055001
SS400-Hpass10H-25543-0140.00240055001
SS400-Hpass10H-25543-0440.00240055001
SS400-Hpass10H-20803-0228.00240059001
SS400-Hpass10H-20803-0328.00240059001
SS400-Hpass09H-76919-50140.00240055001
SS400-Hpass09H-76919-50240.00240055001
SS400-Hpass09H-76919-50240.00240055001
SS400-Hpass09H-76921-50236.00240055001
SS400-Hpass09H-76921-50336.00240055001
SS400-Hpass10H-09353-0128.00240059001

Chemical composition and Mechanical property

Standard

Grade

C max

Mn max

Si max

P

S

Yield strength max

Tensile strength

Elongation%

JISG3101

SS400

0.22

   -

0.30

0.045

0.030

245

400-500

26

GB700

Q235B

0.14-0.22

0.30-0.65

0.30

0.045

0.030

235

375-460

21-26

ASTM

A36

0.24

   -

0.40

0.045

0.030

250

400-52

26

3. SS400 carbon steel plate and sheet hot rolled mild steel plates with  20mm thick steel plate

STEEL PLATES PICTURES

SS400 carbon steel plate and sheet hot rolled mild steel plates with 20mm thick steel plate



Copyright Notice @ 2008-2012 ECVERY Limited and/or its subsidiaries and licensors. All rights reserved.