Vietnam
EnglishTo equip customers with more information of VAS Group’s products and services, the VAS Steel Handbook provides knowledge on various types of steel.
1. ABOUT VAS GROUP
VAS Group stands for Vietnam Advanced Spirit Nghi Son Group Joint Stock Company – Top 3 largest steel manufacturing enterprises in Vietnam. With over 25 years of experience, VAS Group operates a network of factories that produce steel billets and rolled steel across the country with the combined annual capacities of 4.35 million tons of billets and 2.5 million tons of rolling steel.
VAS Steel is the common name for steel billet and construction steel products [included of rebar and wire rod] manufactured by the VAS Group from five factories operated by the member companies of the Group:
● VAS Steel An Hung Tuong [AHT]
● Danang Steel [DNS]
● VAS Steel Viet My [VMS]
● VAS Steel Tue Minh [TMS]
● VAS Steel Nghi Son [NSS]
The aforementioned factories are located across all three main regions, along with Nghi Son International Port [NSIP], forming a complete ecosystem ready to promptly address the needs of both domestic and foreign customers.
The VAS Steel Nghi Son Factory in Thanh Hoa is invested in modern technology lines with remarkable production capacity. [Photo: VAS]
Nghi Son International Port is an integral part of the VAS Group ecosystem. [Photo: VAS]
As a leading enterprise with many years of experience in the field of steel production, trading, and related services, VAS Group has consistently supported customers and partners. Product quality has always been stable, meeting both Vietnamese and international standards such as: Japan [JIS], UK [BS4449], and US [ASTM, SAE, J403], which represents the primary commitment in VAS's brand promises.
VAS Steel has obtained ISO environmental certification and meet international quality standards, enabling successful exports to over 10 countries worldwide. [Photo: VAS]
Applying world – leading technology from Europe, VAS persistently invests in innovation and modernizing new production technology, expanding modern scale, with scrap iron and steel recycling lines to reduce gas emissions of CO2, thus contributing to minimizing the greenhouse effect. This effort creates "Green Steel" products that meet international quality standards. VAS Group is a pioneer that applies the circular economy model towards a "Green, Clean" heavy industry.
2. STEEL CLASSIFICATION
To bring customers for more information of VAS Group’s products and services, the VAS Steel Handbook provides knowledge on various types of steel together with detailed technical specifications so that customers and partners may gain a deeper understanding of the quality and superiority of furnished steel products of the VAS Group.
Steel is the alloy fitting of iron and carbon as well as other elements, including: Mn, Si, P, S, Cu, Cr, Ni,...
VAS Group is the third-largest steel manufacturing enterprise in Vietnam. [Photo: VAS]
Depending on the chemical constitution of elements in the steel, we can classify steel into two groups, namely carbon steel and alloy steel.
2.1. Carbon steel: This type of steel accounts for the majority of steel production [about 80%-90%], it includes 2 main elements, i.e., iron and carbon.
2.2. Alloy steel: Beside iron, carbon, and main elements, specific amounts of alloy elements are introduced to alter the organization and attributes of steel to conform to usage needs. Commonly introduced elements include: Mn, Si, Cr, Ni…
Classification of carbon steel and alloy steel
3. ELEMENTS THAT DETERMINE STEEL ATTRIBUTES
3.1. Carbon: This is the most important element that determines the organization, attributes, and usage of steel. Depending on carbon percentage [%C], steel can be categorized into 4 groups with different mechanical properties and usage:
3.1.1. Low-carbon steel [%C 0.3%]: Elastic but low durability and hardiness [Construction steel].
3.1.2. Medium-Carbon steel [%C from 0.3 – 0.5%]: Used to produce high-strength steel bars and machine parts that are subject to high static and impact loads.
3.1.3. Fair-Carbon steel [%C from 0.50 – 0.65%]: Has an elasticity ratio and is used for spring steel and restressed steel.
3.1.4. High-Carbon steel [%C 0.7%]: Has high hardiness, used as measurement equipment, knives, stamping mold.
3.2. Manganese: This element has a positive effect on the mechanical properties, when dissolved, it can improve the durability and hardiness of steel.
3.3. Siliceous: Similar to manganese, siliceous dissolved in ferrite [the crystallographic structure that constitutes steel] also improves durability and hardiness and increases the mechanical properties of steel.
Elements determining steel attributes
4. CARBON RATIO DETERMINES STEEL GRADES
Carbon, the main components along with manganese and silicon, help classify steel grades
4.1. Wire Rod
|
Standard |
Grade |
Chemical composition |
Tensile properties |
|||||
|
%C |
% Mn |
%P [max] |
%S [max] |
Tensile strength. min [Mpa] |
Yield strength. min [Mpa] |
Elongation. %Agt |
||
|
TCVN 1651 – 1:2018 |
CB 240 – T |
– |
– |
0.050 |
0.050 |
min 240 |
min 380 |
min 2% |
|
CB 300 – T |
– |
– |
0.050 |
0.050 |
min 300 |
min 440 |
min 2% |
|
|
SAE J403:2014 |
SAE1008 |
Max 0.1 |
Max 0.5 |
0.040 |
0.050 |
– |
– |
– |
|
SAE1010 |
0.08 – 0.13 |
0.30 – 0.60 |
0.040 |
0.050 |
– |
– |
– |
|
|
SAE1012 |
0.10 – 0.15 |
0.30 – 0.60 |
0.040 |
0.050 |
– |
– |
– |
|
|
SAE1015 |
0.13 – 0.18 |
0.30 – 0.60 |
0.040 |
0.050 |
– |
– |
– |
|
|
SAE1018 |
0.15 – 0.20 |
0.60 – 0.90 |
0.040 |
0.050 |
– |
– |
– |
|
4.2. Rebar
|
Grade |
Chemical composition |
Tensile properties |
|||||||||||
|
%C [max] |
%Mn [max] |
%Si [max] |
%P [max] |
%S [max] |
%Cu [max] |
%N [max] |
Cev |
Tensile strength. min [Mpa]. Re |
Yield strength. min [Mpa]. Rm |
Ratio |
Elongation. %Agt |
||
|
CB 300 – V |
– |
– |
– |
0.050 |
0.050 |
– |
– |
– |
– |
– |
– |
– |
|
|
CB 400 – V |
0.29 |
1.8 |
0.55 |
0.040 |
0.040 |
– |
– |
0.6 |
– |
– |
– |
– |
|
|
CB 500 – V |
0.32 |
1.8 |
0.55 |
0.040 |
0.040 |
– |
– |
0.6 |
– |
– |
– |
– |
|
|
Gr 40 [280] |
– |
– |
– |
– |
– |
– |
– |
– |
min 280 |
min 420 |
– |
– |
|
|
Gr 60 [420] |
– |
– |
– |
– |
– |
– |
– |
– |
min 420 |
min 550 |
– |
– |
|
|
B500A |
0.22 |
– |
– |
0.050 |
0.050 |
0.85 |
0.014 |
0.52 |
min 500 |
– |
1.05 |
2.5% |
|
|
B500B |
0.22 |
– |
– |
0.050 |
0.050 |
0.85 |
0.014 |
0.52 |
min 500 |
– |
1.08 |
5.0% |
|
|
B500C |
0.22 |
– |
– |
0.050 |
0.050 |
0.85 |
0.014 |
0.52 |
min 500 |
– |
>=1.05. <1.35 |
7.5% |
|
|
250 |
0.22 |
– |
– |
0.050 |
0.050 |
0.80 |
0.012 |
0.42 |
min 250 |
– |
1.05 |
5.0% |
|
|
500B |
0.22 |
– |
– |
0.050 |
0.050 |
0.80 |
0.012 |
0.50 |
min 500 |
– |
1.08 |
5.0% |
|
|
500C |
0.22 |
– |
– |
0.050 |
0.050 |
0.80 |
0.012 |
0.50 |
min 500 |
– |
>=1.05. <1.35 |
7.5% |
|
|
B500A |
0.22 |
– |
– |
0.050 |
0.050 |
0.80 |
0.012 |
0.50 |
min 501 |
– |
1.05 |
2.5% |
|
|
B500B |
0.22 |
– |
– |
0.050 |
0.050 |
0.80 |
0.012 |
0.50 |
min 502 |
– |
1.08 |
5.0% |
|
|
B500C |
0.22 |
– |
– |
0.050 |
0.050 |
0.80 |
0.012 |
0.50 |
min 503 |
– |
>=1.05. <1.35 |
7.5% |
|
|
SD295 |
0.27 |
1.50 |
0.55 |
0.040 |
0.040 |
– |
– |
0.80 |
295-440 |
– |
– |
– |
|
|
SD390 |
0.29 |
1.80 |
0.55 |
0.040 |
0.040 |
– |
– |
0.65 |
390-510 |
min 560 |
– |
– |
|
5. VAS GROUP’S SPEARHEADING STEEL TYPES
VAS Group’s main types of steel
With products of international quality, large-scale production capacity, competitive prices, and a steadfast to maintain brand reputation, VAS Steel is quickly embraced by customers and reaches both domestic and international markets. Presently, VAS Group supplies the market with “VAS” brand billet, rebar, and wire rod, including:
5.1. Billet: Utilized in the production of hot rolled steel for construction purposes, with lengths ranging from 6m to 12m and cross sections of 130x130mm and 150x150mm. They come in various steel grades such as BCT34, BCT38, BTC51, SD295, CB300-V, SD390, and Gr60.
5.2. Rebar: Utilized in construction projects involving concrete and reinforced steel, such as civil houses, industrial buildings, office buildings, bridges, roads, and hydroelectric projects. Available in diameters ranging from D10mm to D41mm, meeting standards including Vietnam [TCVN], Japan [JIS], UK [BS4449], and US [ASTM, SAE, J403]. These products come in various steel grades, including SD295, SD390, CB300-V, CB400-V, CB500-V, Gr40 [280], Gr60 [420], B500A, B500B, and B500C.
5.3. Wire rod: Utilized in both industrial and civil construction and for wire drawing purposes, these products come in sizes ranging from 5.5mm to 14mm. They feature a roll outer diameter of 1.2m and weighs ranging from 1,500kg to 2,100kg. Meeting standards including Vietnam [TCVN], Japan [JIS], UK [BS4449], and the US [ASTM, SAE, J403]. They are available in various steel grades such as CB 240-T, CB 300-T, SAE1010, SAE1012, and SAE1015.
VAS Steel products are manufactured with the highest quality standards, meeting the requirements for the construction of large-scale projects such as bridges, roads, high-rise buildings, and large industrial projects, especially national key projects.
6. IDENTIFICATION OF VAS STEEL PRODUCTS – IN COMPARISON WITH STEEL PRODUCTS FROM OTHER MANUFACTURERS.
6.1 Identifying VAS steel products
Wire Rod
● Each roll of steel is assigned with a Etiket label from the producer which provides the details of: Name of the producer, Standard applied, Steel grade, Size, Batch number, Date of production, Weight, QR code for quick access.
● D6 and D8 rolling steel products are embossed with the VAS letters [applicable to civic products].
● Rolls are tightened with 4 belts.
Rebar
● Each steel bundle is assigned with a Etiket label from the producer which provides the details of: Name of the producer, Standard applied, Steel grade, Size, Batch number, Date of production, Weight, QR code for quick access.
● Each bar is embossed with the VAS letters and 4 bumps apart from this are steel code and diameter specifications [VAS steel].
● Letters embossed on steel bars are tidy and sharp, have gloss surface, colored green, bumps are evenly spaced, cross-sessions are flat, tidy, unbent.
6.2 Identifying steel made by member companies of the VAS Group
Identifying steel made by member companies [Photo: VAS]
Applying the world's leading modern technology from Danieli [Italy] for production, VAS Group introduces steel products that meet most construction steel standards worldwide, excelling in product stability, sharpen product shape, and highly aesthetic appearance. These are the primary products and strategies that have enabled VAS Group to leave its mark on key national projects such as the City Administrative – Political Center in Hai Phong, Long Thanh International Airport, Terminal T3 of Tan Son Nhat Airport, and the Can Tho – Hau Giang Expressway. This establishes trust and confidence among customers when using VAS Group's products for large projects with high-quality requirements.
After 25 years of establishment and development, VAS Group has remained steadfast in realizing the aspiration of "Vietnam Advance Spirit” to make its mark and strive to become the leading steel manufacturing corporation in Vietnam. At the present, VAS steel has been exported to more than 10 countries and is the second Vietnamese steel brand that accepted by Japan, the highest demand country for quality in the world. In April 2023, VAS also successfully entered the US market, proudly representing Vietnamese identity on all five continents.
Source: VAS
