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718 HH Steel Supplier in India | High Hardness Plastic Mould Steel
Introduction to 718 HH Steel
718 HH steel is a premium, pre-hardened plastic mould steel that is a high-hardness variant of the standard 718 grade. It is specifically designed for applications requiring a higher level of wear resistance and strength without the need for additional heat treatment. Its uniform hardness, excellent machinability, and superior polishability make it a top choice for demanding plastic injection moulds and components. At Jupiter Steels, based in Delhi, we are a trusted stockist and supplier of 718 HH steel, providing top-quality material to customers throughout India, including key industrial regions like Manesar, Haryana, and beyond.
Chemical Composition of 718 HH Steel
The reliable performance of 718 HH steel is a direct result of its carefully controlled chemical composition. The key alloying elements and their typical weight percentages are:
- Carbon (C): 0.35 – 0.45%
- Manganese (Mn): 1.40 – 1.60%
- Chromium (Cr): 1.80 – 2.10%
- Molybdenum (Mo): 0.20 – 0.35%
- Nickel (Ni): 0.90 – 1.20%
Functioning and Reasoning of Chemical Elements
- Nickel (Ni), Chromium (Cr), and Molybdenum (Mo): This combination of alloying elements gives 718 HH steel its excellent hardenability and the ability to be supplied in a high-hardness, pre-hardened condition with a uniform hardness throughout the cross-section. These elements also contribute to its strength and toughness, which are crucial for demanding moulds.
- Manganese (Mn): Manganese improves the steel’s hardenability, ensuring the desired properties are achieved consistently.
Hardness, Properties, and Applications of 718 HH
Hardness
718 HH steel is typically supplied in a pre-hardened condition with a higher hardness range of 33-37 HRC, providing a significant performance advantage over standard grades without further heat treatment.
Properties
- High Hardness & Wear Resistance: Its elevated hardness provides increased resistance to wear and abrasion, extending the life of the mould.
- Excellent Machinability: In its pre-hardened state, it can be easily machined, saving significant time and cost in the mould manufacturing process.
- Superior Polishability: The clean microstructure allows for a superior mirror finish, which is critical for producing parts with high cosmetic requirements.
- Uniform Hardness: The steel provides consistent hardness throughout the material’s cross-section, even in large blocks.
Applications
718 HH steel is a premier grade used for a wide range of plastic mould applications. Key applications include:
- Large Plastic Injection Moulds requiring high wear resistance
- Moulds for automotive components with textured or high-gloss finishes
- Moulds for electronics and consumer goods
- Mould bases and frames for demanding applications.
Why Choose Jupiter Steels for 718 HH?
As a premier steel stockist in India, Jupiter Steels is your reliable partner. We are committed to providing you with top-notch materials and service.
- Certified Quality: We supply high-quality, genuine 718 HH steel that meets all required specifications. Our reputation for excellence is a promise to our customers.
- Nationwide Supply Chain: While based in Delhi, our robust logistics network allows us to provide high-quality steel to customers across India, including Haryana, Manesar, Rajasthan, and other industrial areas.
- Expert Guidance: Our team has extensive knowledge of different steel grades. We don’t just sell steel; we provide expert advice to help you select the right material for your specific application.
718 HH Steel FAQ Section
Q1: What is 718 HH steel used for?
A: 718 HH steel is primarily used for plastic injection moulds that require higher hardness and wear resistance than standard pre-hardened grades.
Q2: What is the benefit of a higher hardness mould steel?
A: Higher hardness provides increased resistance to abrasive wear, which is crucial for extending the life of the mould, especially in high-volume production.
Q3: Can 718 HH be welded?
A: Yes, 718 HH steel can be welded, but it requires careful procedures. The welding process should be followed by a stress relief heat treatment to maintain the material’s properties.
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