S7 High Impact Strength Tool Steel Forged and Rolled Round Bar Flat

• Type: Round
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Stainless Steel Scrap
• Technique: Forged
• Shape: Bar
• Surface Treatment: Black/Milled/Machined
• Model NO.: round bar
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Transport Package: Wooden
• Specification: 6-400mm
• Trademark: Smooth
• Origin: China
• HS Code: 7214100000
• Production Capacity: 5000 Ton/Year

Product Description

S7 Steel Overview:
S7 steel is a shock-resistant tool steel known for its exceptional toughness and high impact strength. It belongs to the AISI S-series of shock-resistant tool steels and is commonly used in various industrial applications requiring resistance to impact and abrasion.

Chemical Composition:

Element	Composition (%)
Carbon (C)	0.45-0.55
Manganese (Mn)	0.20-0.80
Phosphorus (P)	≤0.030
Sulfur (S)	≤0.030
Silicon (Si)	0.20-0.50
Chromium (Cr)	3.00-3.50
Vanadium (V)	0.30-0.60
Molybdenum (Mo)	1.30-1.80

Properties:
1.High Impact Strength: S7 steel exhibits exceptional toughness and impact resistance, making it suitable for applications subjected to high impact loads and shock.
2.Good Wear Resistance: With its alloying elements, S7 steel provides good resistance to wear and abrasion, extending tool life and reducing maintenance requirements.
3.Excellent Hardenability: S7 steel can be hardened to high levels, achieving uniform hardness throughout the cross-section of the material, ensuring consistent performance in critical applications.
4.Dimensional Stability: S7 steel maintains dimensional stability during heat treatment and service, minimizing distortion and ensuring dimensional accuracy in finished components.
5.Good Machinability: S7 steel is readily machinable, allowing for the fabrication of complex shapes and intricate parts with tight tolerances.
6.Versatile Applications: S7 steel is commonly used in the manufacture of forging dies, punches, chisels, and other tools requiring high toughness and wear resistance.

Heat Treatment:
S7 steel is typically heat treated using conventional methods to achieve the desired combination of hardness, toughness, and dimensional stability. Common heat treatment processes include:
Annealing: Heating to a temperature of 800-850°C, followed by slow cooling in the furnace to relieve internal stresses and refine the microstructure.
Hardening: Heating to a temperature of 870-900°C, followed by quenching in oil or air to achieve maximum hardness.
Tempering: Tempering at a temperature of 150-200°C for a specific duration to achieve the desired combination of hardness and toughness.

Surface Treatment:
Surface treatments such as nitriding or coating may be applied to S7 steel to enhance its wear resistance, corrosion resistance, or surface hardness, depending on the application requirements.

Quality Assurance:
S7 steel is produced and tested according to industry standards such as ASTM A681 or equivalent, ensuring consistent quality, mechanical properties, and performance in various applications.

Environmental Considerations:
In the production and processing of S7 steel, environmental considerations such as energy efficiency, waste management, and emissions control should be addressed to minimize environmental impact and promote sustainability in the industry.