High Strength Low Alloy Steel

Docol 420LA High Strength Low Alloy Steel (HSLA)

Docol 420LA High Strength Low Alloy Steel (HSLA) DescriptionThe 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 t

Factory area 20000 square meters.
Support specification customization.
Strict quality control, ISO certification.
Abide by the contract and deliver on time.
After-sales team gives you the best service.

+86 13293766666

admin@sdyulun.com

Product Details
Comments

Docol 420LA High Strength Low Alloy Steel (HSLA) Description

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 Grade

Standard

Plating

Test Direction

Yield Strength Rp0.2 (MPa)

Tensile Strength Rm (MPa)

Extension Rate A80( min%)

Minimum Bend Inner Diameter for 90 ° Bend

Docol CR

420LA

VDA239- 100:2016

GI, GA*, ZA

420-520

480-600

1.0xt

Docol HR

420LA

VDA239- 100:2016

UC, Cam tho

420-520

480-600

UC 0.5xt bottle

GI 1.0xt

Chemical Composition

Steel Grade	Plating	C (max %)	Si (max %)	Mn (max %)	P (max %)	S (max %)	Al ( min%)	Ti (max%)	Nb (max %)	Cu (max %)
Docol CR 420LA	GI,GA,ZA	0.12	0.50	1.65	0.30	0.025	0.015	0.015	0.10	0.20
Docol HR 420LA	UC	0.12	0.50	1.60	0.30	0.025	0.015	0.015	0.09	0.20
Docol HR 420LA	GI	0.12	0.50	1.60	0.30	0.025	0.015	0.015	0.10	0.20

Plating

Plating Type	Plating Grade	Standard	Single-sided coating quality, single-point test (g/m2)	Single side thickness, for reference only(μm)
GI	40/40	VDA239-100	40-60	5.6-8.5
GI	50/50	VDA239-100	50-70	7.0-9.9
GI	60/60	VDA239-100	60-90	8.5-12.7
GI	70/70	VDA239-100	70-100	9.9-14.1
GI	85/85	VDA239-100	85-115	12.0-16.2
GI	115/115	VDA239-100	115-155	16.2-21.8
GA	40/40	VDA239-100	40-60	5.6-8.5
GA	50/50	VDA239-100	50-80	7.0-11.3
ZA	95	As required		7-
ZA	130	As required		10-

Mark Doe	Greatest product ever Galvanized coils are our top choice for durability and consistency. The zinc layer uniformity saves us time in post-processing, and your team’s technical support is always helpful.
Mahan Selon	Greatest product ever We have been purchasing yulun galvanized steel coils for the quality has consistently exceeded our expectations. The coating uniformity, corrosion resistance, and surface finish meet our strict standards, making them ideal for construction.