S320GD | 1.0250: Chemical Composition

 

Hot dip galvanized S320GD steel is a high-strength steel. "320" indicates the minimum yield strength of 320 MPa. S320GD steel is widely recognized for its excellent formability, strength, and superior corrosion protection. It can be produced through hot rolling and cold rolling, with a hot dip galvanizing treatment applied. It is extensively utilized in fields such as the vehicle manufacturing and building industries.

 

 

Percentage by weight % max.
C	Si	Mn	P	S
0.20	0.60	1.70	0.10	0.045

 

 

Property	Value
Tensile Strength (Rm)	290 – 390 MPa
0.2% Proof Strength (Rp0.2)	≥ 320 MPa
Minimum Elongation (Lo = 80 mm) (A)	≥ 17%

 

Note:

The minimum elongation requirement varies with thickness:

• 0.5 mm < t ≤ 0.7 mm: The minimum elongation is reduced by 2% compared to the listed value.
• 0.35 mm < t ≤ 0.5 mm: The minimum elongation is reduced by 4% compared to the listed value.
• t ≤ 0.35 mm: The minimum elongation is reduced by 7% compared to the listed value.

The tensile strength range for this grade can vary by up to 140 MPa, depending on processing conditions and coating specifications.

 

 

 

1. Excellent corrosion resistance, zinc has more reactive chemical properties than iron and will preferentially react with oxygen and water vapor in the environment to form a dense oxide film. The service life of galvanized steel plates can reach 10-50 years, far exceeding that of ordinary steel plates.
2. High cost-effectiveness and low cost anti-corrosion: Compared with stainless steel or other alloy steels, galvanizing process has lower cost, but can significantly improve the durability of steel plates and reduce maintenance or replacement costs.
3. Good processing performance, galvanized steel sheet can be processed by cutting, bending, welding, etc
4. High strength and lightweight, different strength substrates (such as low carbon steel and high-strength steel) can be selected according to needs.
5. Aesthetics, the galvanized layer presents a silver gray luster, neat and beautiful, suitable for exposed use occasions
6. Environmental friendliness and recyclability: Galvanized steel plates are 100% recyclable, and zinc itself is also a reusable resource.

 

 

Available Steel Grade(Ensure weight and support third-party testing)
Steel grade	Coating	Yield(MPA)	Tensile(MPA)	Elongation(%)
DX51D	Z,ZF	--	270-500	20
DX52D	Z,ZF	140-300	270-420	22
DX53D	Z,ZF	140-260	270-380	26
DX54D	Z,ZF	140-220	270-350	30
S220GD	Z,ZF	220	300	18
S250GD	Z,ZF	250	330	17
S280GD	Z,ZF	280	360	16
S320GD	Z,ZF	320	390	15
S350GD	Z,ZF	350	420	14
S400GD	Z,ZF	400	470	--
S450GD	Z,ZF	450	530	--
S500GD	Z,ZF	500	560	--
Select type Galvanized Steel based on requirements

 

FAQ:

 

Q: What are the dimensional specifications for S320GD steel coils?

A: S320GD steel coils are available in various thicknesses, typically ranging from 0.35 mm to 0.50 mm. These coils are produced to meet specific industry standards and dimensional requirements.

Q: How does the zinc coating on S320GD steel improve its properties?

A: The zinc coating on S320GD steel provides better corrosion resistance, significantly enhancing the steel's longevity and performance in harsh environments. This is crucial for maintaining the integrity of structures exposed to the elements.

Q: What standards govern the production of S320GD steel?

A: The production of S320GD steel is regulated by standards such as EN 10147, which specify the chemical composition, mechanical properties, and coating requirements to ensure consistent quality and performance.

Q: Can S320GD steel be used for welding applications?

A: Yes, S320GD steel offers good weldability, making it suitable for various welding applications in construction and manufacturing. Its low-carbon content and specific alloying elements facilitate welding processes.

Q: What is the significance of the longitudinal and coil terms in relation to S320GD steel?

A: Longitudinal refers to the orientation of the steel grain structure, which can impact its mechanical properties. Coils denote the form in which the steel is supplied, allowing for efficient transportation and processing in manufacturing.

Q: How does the base material of S320GD steel contribute to its characteristics?

A: The base material of S320GD steel, typically a low-carbon steel, balances strength and ductility. This makes it ideal for forming and shaping processes while maintaining structural integrity.

 

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