This product is typically used for cold rolling and among the hot rolled products has the lowest strength. It has wide applications ranging from regular machining to drawing and ironing. It is also used in a variety of cold rolled products including CR, GI, EG and color plates.
Steel Grade
Q235NH
Size
8.0 X 1500 X 3000
10.0 X 1500 X 3000
12.0 X 1500 X 300
15.0 X 1500 X 3000
This product specification is subject to change, so please check the latest specifications when ordering or consult with the person in charge.
Chemical Composition
| Specification | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Ni(%) | Cr(%) | B(%) | Cu(%) |
|---|---|---|---|---|---|---|---|---|---|
| Q235NH | ~0.0598 to 0.0816 | ~0.1675 to 0.1739 | ~0.293 to 0.3007 | ~0.0176 | ~0.0019 | ~0.06 to 0.07 | ~0.45 | ~0.0002 | ~0.273 |
Mechanical Properties
| Specification | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) |
|---|---|---|---|
| Q235NH | 347~ | 421~ | 25.5~ |
Powered by state-of-the-art facility and technology, it operates a totally computerized, end-to-end full automatic production system. This allows us to deliver high-quality and high-performance products to the needs of customers.
Reheating
Steel slabs, which are produced in a continuous casting plant, are first conditioned in a reheating furnace before being transferred to the steel rolling works. In order to remove the thick scale which can form on the surface of a hot slab, Scale Breakers (VSB) are used.
Roughing
In this process, slabs whose surface scale share has been removed are made into rolled materials with the proper shape, thickness, and width. In the entry and exit area of the roughing mill, an edger rolls the strip in the width direction using an Automatic Width Control (AWC) system.
Finishing Rolling
The purpose of finishing rolling is to adjust the thickness and width of a coil to the specified dimensions and to produce a smooth surface and shape at the desired finishing temperature appropriate for its intended use. Our up-to-date equipment, including Work Roll Shift Mills, Pair Cross Mills and On-line Roll Grinders (ORG), enhances plant productivity and improves the quality of the finished coils by controlling the crown shape.
Run-Out Table and Coiling
Steel strips, after the finishing mill, are passed to the run-out table where they are coiled. While being rolled on the table, the strips are sprayed with water to cool them to the proper temperature for coiling.
