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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- Commodity name: 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.
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
L
420-520
480-600
17
1.0xt
Docol HR
420LA
VDA239- 100:2016
UC, Cam tho
L
420-520
480-600
18
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-
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Docol 420LA High Strength Low Alloy Steel (HSLA) - Stock Warehouse
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Docol 420LA High Strength Low Alloy Steel (HSLA) - Product Inspection
Tensile Strength Testing Tensile Strength Testing Physical Performance Testing Chemical Composition Testing 
Inspection Hardness Testing Spectral Detection Mechanical Properties -
Docol 420LA High Strength Low Alloy Steel (HSLA) - Product Measurement
Thickness measurement Thickness measurement Thickness measurement Thickness measurement 
Thickness measurement Thickness measurement Thickness measurement Width measurement -
Docol 420LA High Strength Low Alloy Steel (HSLA) - Product Packaging
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