saw blade spring steel alloy structure steel plate 42CrMo4 SCM435 SAE4140 50Mn2V
Contact: Ms Sandy Wei
Alloy structural steel
Steel used to make important engineering structures and machine parts is called alloy structural steel. Mainly low-alloy structural steel, alloy carburizing steel, alloy quenched and tempered steel, alloy spring steel, ball bearing steel.
Low alloy structural steel (also known as ordinary low alloy steel, HSLA)
1. Uses Mainly used in the manufacture of bridges, ships, vehicles, boilers, high pressure vessels, oil and gas pipelines, large steel structure.
2. Performance requirements
(1) high strength: the general yield strength of 300MPa or more.
(2) high toughness: the required elongation of 15% to 20%, room temperature impact toughness greater than 600kJ / m ~ 800kJ / m. For large welding components, but also requires a higher fracture toughness.
(3) good welding performance and cold forming performance.
(4) low cold brittle transition temperature.
(5) good corrosion resistance.
3. Component characteristics
(1) low carbon: due to toughness, weldability and cold forming performance requirements, the carbon content of not more than 0.20%.
(2) to join the manganese-based alloying elements.
(3) adding niobium, titanium or vanadium and other auxiliary elements: a small amount of niobium, titanium or vanadium in the steel to form fine carbides or carbonitride, is conducive to obtain small ferrite grains and improve the strength and toughness of steel The
In addition, adding a small amount of copper (≤ 0.4%) and phosphorus (0.1%), etc., can improve the corrosion resistance. Add a small amount of rare earth elements, can be desulfurization, degassing, so that steel purification, improve toughness and process performance.
Size:
Thickness 4.5 -350mm
Width: 1600 - 4100 mm
Length: according to customer need
Packing: Standard Export Package: Wooden Pallets with waterproof paper.
Payment Terms: We have the following two payment methods.
*) 30% T. T as deposit, the balance is against B/L Copy.
*) 100% Irrevocable L/C at sight
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