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High-strength steel for automobiles（HSS）
High-strength steel (HSS) is widely used in the automotive industry, mainly to reduce vehicle weight, improve safety and fuel efficiency.
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Product Parameters

1.Classification by strength level


CategoriesY.S. (MPa)T.S. (MPa)Typical processRepresentative   brand
Normal High Strength Steel（HSS）210-550340-700Hot   rolling/cold rolling+micro alloyingQ345B (GB)、S355MC   (EN)、SAPH440 (JIS)、A572 Gr.50 (ASTM)
Advanced High Strength Steel (AHSS)550-1200700-1500Controlled   rolling and controlled cooling/heat treatmentDP600/DP800 、TRIP600/TRIP800 、CP800
Ultra-high strength steel (UHSS)≥1200≥1500Hot   forming/quenchingMS1180/MS1500 、22MnB5、USIBOR®1500
Hot formed steel (PHS)1000-15001500-2000Hot   stamping + in-mold quenching22MnB5+Coating、MBW®1700 (Zinc coating)
2. Chemical composition comparison (mass fraction, %)



GradeC (≤)Si (≤)Mn (≤)P (≤)S (≤)Reminder
Q345B (GB)0.20.51.70.0350.035Nb/V/Ti (Optional)
S355MC (EN)0.120.51.50.0250.025Ti/Nb (Refine grain size)
SAPH440 (JIS)0.150.41.40.040.04-
A572 Gr.50 (ASTM)0.230.41.350.040.05Nb/V(Strengthening)
3. Physical performance comparison



GradeY.S. (MPa)T.S. (MPa)Elongation (%)Impact energy (J, -20℃)Hardness (HB)
Q345B≥345470-630≥21≥34137-187
S355MC≥355430-580≥18≥27120-180
SAPH440≥305440-590≥26-≤170
A572 Gr.50≥345450-550≥18-143-192
4.Main application scenarios


GradeTypical   ApplicationsApplicable   processAdvantages
Q345BCommercial   vehicle frames, building steel structures, construction machineryWelding,   hot rollingLow   cost and sufficient supply
S355MCAutomobile   chassis parts, truck longitudinal beams, cold-formed profilesCold   stamping, roll formingLow   P/S, suitable for cold working
SAPH440Door   anti-collision beams, suspension arms, wheel spokesStamping,   weldingHigh   elongation, good formability
A572 Gr.50Bridges,   heavy truck frames, tower crane structuresWelding,   rivetingHigh   Nb/V content, excellent fatigue resistance


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Product Application

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Product Packaging

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FAQ

Q:Can I get samples before order ?

A:Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings.

Q:Can I go to your factory to visit?

A:Of course, we welcome customers from all over the world to visit our factory.

Q:How can I get a quotation from you ?

A:You can leave us message, and we will reply every message in time. Or we may talk on line.

Q:What product information do I need to provide?

A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Q:Does the product have quality inspection before loading?

A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept the third party inspection absolutely.

Q:What are the advantages of your company?

A:（1）More Than 30 year's Experience

（2）The company is a modern steel enterprise group integrating precision manufacturing, spot warehousing, international logistics, and product deep processing.

（3）World-class production equipment, product quality that meets international certifications, and timely and thoughtful after-sales service

（4）Never stop product research and development and innovation to create high-quality products that meet the global standards.

（5）Integrity business philosophy, the highest quality products, the most reasonable prices, and a global marketing network.

Q:How do we trust your company?

A:We specialise in steel business for years as golden supplier on Alibaba, headquarter locates in liaocheng, Shandong province, you are welcome to investigate in any ways, by all means, you could place an order in Alibaba with trade assurance which could secure your payment.

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