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718 Steel Supplier in India | Your Partner for High-Quality Plastic Mould Steel
Introduction to 718 Steel
718 steel is a popular low-alloy, pre-hardened plastic mould steel that is widely used in the mould-making industry. This grade is a top choice for a variety of plastic injection moulds due to its excellent combination of good machinability, uniform hardness, and superior polish ability. The material is typically supplied in a pre-hardened condition, which saves significant time and cost by eliminating the need for further heat treatment by the mould maker. At Jupiter Steels, based in Delhi, we are a trusted stockist and supplier of 718 steel, providing top-quality material to customers throughout India, including key industrial regions like Manesar, Haryana, and beyond.
Chemical Composition of 718 Steel
The reliable performance of 718 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%
- Sulfur (S): 0.05 – 0.10%
Functioning and Reasoning of Chemical Elements
- Chromium (Cr) & Molybdenum (Mo): This combination of alloying elements gives 718 steel its excellent hardenability and the ability to be supplied in a pre-hardened condition with a uniform hardness throughout the cross-section. These elements also contribute to its strength and toughness, which are crucial for large moulds.
- Sulfur (S): The addition of sulfur is a key feature of this grade. It significantly improves machinability, reducing tool wear and machining time, which is a major advantage for mould makers.
- Manganese (Mn): Manganese improves the steel’s hardenability, ensuring the desired properties are achieved consistently.
Hardness, Properties, and Applications of 718
Hardness
718 steel is typically supplied in a pre-hardened condition with a hardness in the range of 28-32 HRC. This ready-to-use hardness eliminates the risk of distortion from heat treatment after machining.
Properties
- Excellent Machinability: Due to its sulfur content, 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.
- Good Toughness: It provides a good balance of toughness and strength, which helps to prevent chipping and fracturing in mould components.
Applications
718 steel is a premier grade used for a wide range of plastic mould applications. Key applications include:
- Large Plastic Injection Moulds
- Mould Bases and Frames
- Moulds for consumer electronics, automotive parts, and packaging.
- Mould components that do not require extremely high hardness.
Why Choose Jupiter Steels for 718?
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 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 Steel FAQ Section
Q1: What is 718 steel used for?
A: 718 steel is primarily used for plastic injection moulds, especially for large moulds and components that require good machinability and polishability.
Q2: Does 718 steel require heat treatment?
A: 718 steel is typically supplied in a pre-hardened condition and does not require further heat treatment. This saves time and minimizes the risk of distortion.
Q3: Can 718 be welded?
A: Yes, 718 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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