Production Size Range
JIS G3106 SM490YA steel plates can be supplied in a wide range of dimensions to suit various structural and engineering applications:
Thickness: 4mm – 400mm
Width: 1000mm – 4000mm
Length: 4000mm – 12000mm
This size flexibility makes SM490YA suitable for both standard structural fabrications and large heavy-section engineering projects.
Production Capacity
The production capacity of SM490YA steel plates can reach 10,000 tons per month, ensuring stable and continuous supply for long-term construction projects, infrastructure developments, and large machining orders.
Production Method
Hot Rolled
The plates are manufactured through hot rolling, ensuring uniform thickness, stable mechanical strength, and good surface quality. Controlled rolling and heat treatment may be applied depending on customer requirements and end-use conditions.
Technical Details
Various heat treatment options are available depending on the required performance level:
Normalized (N)
Quenched (Q)
Tempered (T)
HIC Resistance (Optional)
Impact Test (Optional)
Note: Heat treatments are optional if not specifically required by the project standard or technical specification.
Chemical Composition (Typical Maximum Content %)
| Grade / Material | C (max) | Mn (max) | Si (max) | P (max) | S (max) |
|---|---|---|---|---|---|
| JIS G3106 SM490YA | 0.20 | 1.60 | 0.55 | 0.035 | 0.035 |
The low carbon content ensures good weldability, while manganese and silicon contribute to high strength and toughness. Controlled phosphorus and sulfur levels help maintain structural reliability and prevent brittleness.
Mechanical Properties
| Grade / Material | Tensile Strength (MPa) | Yield Strength (min MPa) | Elongation (min %) |
|---|---|---|---|
| SM490YA | 490 – 610 | 365 | 19 |
These mechanical properties make SM490YA suitable for load-bearing structures, fabricated welding parts, and components subjected to dynamic or seismic stress.
Impact Test (Optional)
Impact testing may be carried out on request, especially for applications involving low temperature conditions or high vibration environments.
Impact energy values can be customized based on project standards such as -20°C / -40°C impact toughness requirements.