Executive standard of Q355NHD steel plate: GB / t4171
Characteristics of Q355NHD steel plate: it has the characteristics of strength, toughness, plastic elongation, forming, welding and cutting, abrasion, high temperature and fatigue of high-quality steel.
Q355NHD weathering steel meaning:
Q represents yield strength, NH represents weather resistance, and D represents quality grade (A, B, C, D, E). Q355NHD steel plate belongs to atmospheric corrosion resistant steel plate, also known as weather resistant steel plate.
Melting analysis of chemical composition of Q355NHD steel plate:
C |
Si | Mn | P | S | Ni | Cr |
| ≤0.16 | ≤0.5 | 0.5-1.5 | ≤0.03 | ≤0.03 | ≤0.65 | 0.4-0.8 |
| Mo | Cu | Nb | V | Ti | Alt | Zr |
| ≤0.3 | 0.25-0.55 | 0.015-0.06 | 0.02-0.12 | 0.02-0.1 | ≥0.02 | ≤0.15 |
Composition note: in order to improve performance, one or more alloy elements of Nb, V, Ti and Alt can be added as needed.
Q355NHD plate is a low-alloy steel series between ordinary steel and stainless steel. Weathering steel is made of ordinary carbon steel with a small amount of corrosion-resistant elements such as copper and nickel.
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