China SM520 hot rolled steel plate Manufacturer and Supplier | Ruiyi
The composition of SM520 steel plate is mainly composed of carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), nickel (Ni), molybdenum (Mo) and other elements. Among them, carbon is the skeleton element of steel, which can improve the strength and hardness of steel, but also reduces the plasticity and toughness of steel. Silicon and manganese can form solid solutions with carbon, increasing the strength and hardness of steel while maintaining its plasticity and toughness. Phosphorus and sulfur can improve the cutting performance of steel and improve the corrosion resistance of steel. Chromium and nickel improve the corrosion resistance of steel, especially in marine environments. Molybdenum can refine the grains of steel and improve the overall performance of steel. It should be noted that the composition characteristics are important factors affecting the mechanical properties and corrosion resistance of SM520 steel plates, so they need to be adjusted according to different uses and environmental conditions to meet the needs of different application scenarios.
SM520 steel plate has high yield strength and tensile strength and can meet the requirements of large load-bearing structures.
SM520 chemical composition:
C: ≤0.2 Si: ≤0.55 Mn: ≤1.65 P: ≤0.035 S: ≤0.035
Mechanical properties of SM520:
Yield strength: ≥365MPa Tensile strength: 520-640MPa Elongation: ≥19% 0 degree impact energy: ≥47
SM520 steel plate has good toughness, can withstand large impact loads, and is not prone to brittle fracture.
SM520 steel plate mostly used for Bridges, cranes, mining machinery, ships, power stations, vehicles, petroleum storage tanks, containers and other welded structural objects that bear dynamic loads.
SM520 steel plate has good processing performance and can be used for cutting, bending, drilling and other processing operations.
SM520 steel plate has good welding performance and can meet the requirements of various welding processes
SM520 steel plate has good corrosion resistance and can withstand corrosion in various harsh environments for a long time. Corrosion resistance is the ability of a material to resist corrosion in a corrosive environment and is an important indicator of the service life of the material. SM520 steel plate shows good corrosion resistance in corrosive environments such as marine environment and industrial atmosphere, and can effectively extend its service life.
SM400/SM490 Hot rolled steel plate /sheet always be used in the following field
(1)SM400 Hot rolled steelused for metallurgical, mechanical, electrical construction field
(2)SM490 Hot rolled steel used for ships, military (armored) Construction
(3)SM400/SM490 steel plate /sheet used for outside engineering, machine tool base, automobile rear of products
|
Symbol
|
Chemical composition
|
||||
|
C
max
|
Si
max
|
Mn
|
P
max
|
S
max
|
|
|
SM400A
|
0.23
|
–
|
2.5xc min
|
0.035
|
0.035
|
|
SM400B
|
0.20
|
0.35
|
0.6-1.40
|
0.035
|
0.035
|
|
SM400C
|
0.19
|
0.35
|
1.4 max
|
0.035
|
0.035
|
|
SM490A
|
0.20
|
0.55
|
1.6 max
|
0.035
|
0.035
|
|
SM490B
|
0.19
|
0.55
|
1.6 max
|
0.035
|
0.035
|
|
SM490C
|
0.19
|
0.55
|
1.6 max
|
0.035
|
0.035
|
|
SM490YA
|
0.20
|
0.55
|
1.6 max
|
0.035
|
0.035
|
|
SM490YB
|
0.20
|
0.55
|
1.6 max
|
0.035
|
0.035
|
|
SM520B
|
0.20
|
0.55
|
1.6 max
|
0.035
|
0.035
|
|
SM520C
|
0.20
|
0.55
|
1.6 max
|
0.035
|
0.035
|
|
SM570
|
0.19
|
0.55
|
1.6 max
|
0.035
|
0.035
|
SM400 Hot rolled steel plate
Mechanical properties
|
Symbol
|
Yield point or proof stress
N/mm2 (min)
|
Tensile strength
N/mm2
|
Elongation
|
|||
|
Thickness of steel mm
|
Thickness of steel mm
|
thinckness
|
Test piece
|
% min
|
||
|
16 or under
|
Over 16-40
|
100 or under
|
||||
|
SM400A
SM400B
SM400C
|
245
|
235
|
400-510
|
<5
|
NO.5
|
23
|
|
≥5 <16
|
NO.1A
|
19
|
||||
|
≥16 <50
|
NO.1A
|
22
|
||||
|
SM490A
SM490B
SM490C
|
325
|
315
|
490-610
|
<5
|
NO.5
|
22
|
|
≥5 <16
|
NO.1A
|
17
|
||||
|
≥16 <50
|
NO.1A
|
21
|
||||
|
SM490YA
SM490YB
|
365
|
355
|
490-610
|
<5
|
NO.5
|
19
|
|
≥5 <16
|
NO.1A
|
15
|
||||
|
≥16 <50
|
NO.1A
|
19
|
||||
|
SM520B
SM520C
|
365
|
355
|
520-640
|
<5
|
NO.5
|
19
|
|
≥5 <16
|
NO.1A
|
15
|
||||
|
≥16 <50
|
NO.1A
|
19
|
||||
|
SM570
|
460
|
450
|
570-720
|
<5
|
NO.5
|
19
|
|
≥5 <16
|
NO.5
|
26
|
||||
|
≥16 <50
|
NO.5
|
20
|
||||
|
Symbol of grade
|
Test temperature °C
|
Charp Absorption Energy J (min)
|
Test piece
|
|
SM400B
|
0
|
27
|
No.4 in rolling direction
|
|
SM400C
|
0
|
47
|
|
|
SM490B
|
0
|
27
|
|
|
SM490C
|
0
|
47
|
|
|
SM490YB
|
0
|
27
|
|
|
SM520B
|
0
|
27
|
|
|
SM520C
|
0
|
47
|
|
|
SM570
|
-5
|
47
|
