SUMIHARD-K340 Wear-resistant Plates

SUMIHARD - K340 wear - resistant plates, a renowned product of Nippon Steel & Sumitomo Metal, are designed to endure harsh wear conditions. With a Brinell hardness of approximately 340HB, these plates offer about twice the abrasion resistance of ordinary steel plates. In terms of dimensions, they are available in thicknesses ranging from 6 - 100mm, catering to diverse industrial needs. Their excellent weldability, ensured by a Pcm value ≤0.30 (for plate thickness ≤25mm), allows for easy integration into various structures. This, combined with good formability, makes SUMIHARD - K340 suitable for applications in construction machinery, such as dump truck bodies and loader buckets, where both wear resistance and workability are crucial.

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SPECIFICATIONS OF SUMIHARD K400 PLATES/SHEETS

Specification Category	Details
Material Name	SUMIHARD-K400
Nominal Hardness	400 HBW (Brinell Hardness)
Chemical Composition	C: ≤0.21%, Si: ≤0.70%, Mn: ≤1.60%, P: ≤0.025%, S: ≤0.010%, B: ≤0.0030%, Pcm (C.E.): ≤0.30 (t≤25mm)
Mechanical Properties
- Tensile Strength	≥ 1325 MPa
- Yield Strength	≥ 1156 MPa
- Elongation	≥ 25% (on 20mm thickness specimen)
- Impact Energy (Charpy)	73 J (Tested at 0°C)
Heat Treatment Condition	Quenched and Tempered
Surface Treatment (Optional)	Can be supplied with EP, PE, HDP, SMP, PVDF coatings upon request
Key Properties	High abrasion resistance, good bendability and weldability

Available sizes

Thickness	0.1mm - 100mm
- Width	500mm - 3000mm
- Length	1000mm - 12000m

Why Choose Us

✅ Wide Range: Hot-rolled (HR), cold-rolled (CR), galvanized, and more.
✅ Competitive Pricing: Direct factory supply ensures cost efficiency.
✅ Reliable Quality: ISO-certified, strict quality control.
✅ Fast Delivery: Flexible MOQ and global shipping options.

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Advantages

Advantage Category	Key Benefits
Wear Resistance	• 400 HBW Hardness • High Abrasion Resistance
Mechanical Strength	• High Yield Strength (≥1156 MPa) • High Tensile Strength (≥1325 MPa) • Good Impact Strength (73J at 0°C)
Fabrication	• Good Weldability • Good Bendability • Good Machinability
Quality & Supply	• Consistent properties • Mill Test Certificate (MTC) • Global brand reputation

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FAQ

Q:What is SUMIHHARD-K340?

A:SUMIHARD-K340 is a type of wear-resistant steel plate produced by Sumitomo Metals (Japan) . It is designed to withstand significant abrasion and wear in demanding industrial environments.

Q：Can it be bent?
A: Yes. It has good bendability and can be cold-formed into the required shapes, which is a key reason for its popularity.

Q: What is it made of? (Chemical Composition)
A: It's a low-alloy steel that typically contains Carbon (C), Manganese (Mn), Silicon (Si), and often small amounts of Boron (B) and Chromium (Cr) to achieve its hardness and strength.

Q：Can I get samples?

A：Of course, please send us the specifications and quantity of the products you need, and we will provide free samples for your product testing.

Q：What is the minimum order quantity?

A：Usually it is 5 tons, and special circumstances can be negotiated.

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