Docol 420LA High Strength Low Alloy Steel (HSLA)

Docol 420LA steel is a high-strength low-alloy steel, which can be supplied as hot-rolled steel and cold-rolled steel. It is supplied with S420MC based on EN 10149-2:2010 standard.

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The main alloying elements of HSLA steel include carbon, manganese, molybdenum, chromium and nickel. The nickel varies according to different HSLA steel grades. The proportion and ratio of these elements all play a crucial role in the performance of HSLA steel. Docol 420LA HSLA improves strength while maintaining good toughness, giving it superior performance in withstanding impact and tensile stress. Besides, HSLA steel has lower alloying element content, which is beneficial to the implementation of welding processes. Through reasonable control of alloying element content, HSLA steel can have a certain corrosion resistance, suitable for engineering structures in corrosive environments. Lastly, Docol 420LA HSLA has good plasticity and malleability, which is conducive to the implementation of various forming processes and reduces manufacturing costs.

 

Mechanical Properties

Steel GradeStandardPlatingTest DirectionYield Strength Rp0.2 (MPa)Tensile Strength Rm (MPa)Extension Rate A80( min%)Minimum Bend Inner Diameter for 90 ° Bend
Docol CR420LAVDA239- 100:2016GI, GA*, ZAL420-520480-600171.0xt
Docol HR420LAVDA239- 100:2016UC, Cam thoL420-520480-60018UC 0.5xt bottleGI 1.0xt

 

Chemical Composition

Steel GradePlatingC (max %)Si (max %)Mn(max %)P (max %)S(max %)Al( min%)Ti(max%)Nb(max %)Cu(max %)
Docol CR420LAGI,GA,ZA0.120.501.650.300.0250.0150.0150.100.20
Docol HR420LAUC0.120.501.600.300.0250.0150.0150.090.20
Docol HR420LAGI0.120.501.600.300.0250.0150.0150.100.20

 

Plating

Plating TypePlating GradeStandardSingle-sided coating quality, single-point test (g/m2)Single side thickness, for reference only(μm)
GI40/40VDA239-10040-605.6-8.5
GI50/50VDA239-10050-707.0-9.9
GI60/60VDA239-10060-908.5-12.7
GI70/70VDA239-10070-1009.9-14.1
GI85/85VDA239-10085-11512.0-16.2
GI115/115VDA239-100115-15516.2-21.8
GA40/40VDA239-10040-605.6-8.5
GA50/50VDA239-10050-807.0-11.3
ZA95As required
7-
ZA130As required
10-


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◉ FAQ

Q : Are you a manufacturer or just a trader?
A : We are a manufacturer. We can provide high quality products at competitive prices. Our company also has a trade department. Our company specialized in steel products more than 10 years, so we have established cooperative relationship with many steel enterprises. We can provide many types and specifications of steel products.
Q : Could you supply samples?
A : Sure, samples can be provided free of charge, and buyers pay the freight of the sample.
Q : How long does it take you to prepare the goods?
A : It takes seven to ten days for products under 25 tons, and within 15 days for products of 25-100 tons. Special specifications and large quantity of products will be discussed separately.
Q : What is your delivery time?
A : The time of delivery is usually around 15-20 days. We can send out in 2 days, if it has stock.
Q : What is your payment terms?
A : Our usual payment term is 30% deposit, and rest before delivery. L/C is also acceptable. EXW, FOB, CFR, CIF.

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