GB 65Mn Steel Coil, AISI 1066, ASTM 1566
65Mn steel coil is a spring steel with high strength, certain toughness and plasticity, good hardness and good wear resistance. And 65Mn steel is very good for making knives, and can also be used as various flat and round springs, cushion springs, spring springs, etc. in small sizes. AISI 1066 / ASTM 1566 / GB 65Mn steel coil composition and more information as below.
| GB 65Mn Steel Coil Sheet Plate Supply Range | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Specification | ||||||||||||||||||
| Coil/Sheet/Plate | Thickness:0.1mm to 1000mm or can be customized; Width: 10mm to 1000mm or can be customized； Length: Can be customized； We can supply any lenth based on the customer's requirement. | ||||||||||||||||||
65Mn Steel Coil Grade Equivalent Chart
| Country | CHINA | USA | England | Russia | |
|---|---|---|---|---|---|
| Standard | GB | AISI | ASTM | BS EN/BS | GOST |
| Grades | 65Mn | 1066 | 1566 | 080A67 | 65Г |
GB 65Mn Steel Coil Chemical Composition
| Grade | C (%) | Fe (%) | Mn(%) | P(%) | S (%) |
|---|---|---|---|---|---|
| GB 65Mn/ AISI 1066/ ASTM 1566 | 0.60 - 0.71 % | 98.05 - 98.55 % | 0.85 - 1.15 % | ≤0.040 % | ≤0.050 % |
ASTM 1566 Steel Coil Physical Properties
| Physical Properties | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cc | 0.284 lb/in³ |
1566 Steel Coil Mechanical Properties
| Mechanical Properties | |
|---|---|
| Poissons Ratio (Typical For Steel) | 0.27-0.30 |
| Elastic Modulus (GPa) | 190-210 |
| Tensile Strength (Mpa) | 1158 |
| Yield Strength (Mpa) | 1034 |
| Elongation (%) | 15 |
| Reduction in Area (%) | 53 |
| Hardness (HB) | 335 |
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65Mn Steel Coil Application
1. Used for springs with small size, such as pressure-adjusting and speed-regulating springs, force-measuring springs, square coil springs or drawn steel wires as springs on small machinery.
2. It can produce spring rings, valve springs, clutch reeds, brake springs and cold-drawn steel wire coil springs.
3. The main material for making diamond circular saw blades
4. High wear-resistant parts, such as grinding machine spindles, spring chucks, precision machine tool screws, cutters, collars on spiral roller bearings, railway rails, etc.
65Mn Steel Round Bar Coil Sheet Plate Heat Treatment
Heat Treatment Specifications
Quenching 830°C±20°C, oil cooling; Tempering 540°C±50°C (±30°C for special needs).
65Mn Spring Steel Annealed
In the traditional annealing process, first slowly heat to 730 ºC and allow enough time to allow the steel to be fully heated, keep it warm for 13 hours, and then cool the furnace to 650 ºC, then leave the furnace and air cool. Then 65Mn tool steel will get MAX 250 HB (Brinell hardness).
New annealing process: annealing temperature (860±10)°C, heat preservation for 45-60min, furnace cooling to (750±10)°C, heat preservation for 3-3.5h, after furnace cooling to 650-660°C, heat preservation The pit is slowly cooling. The metallographic structure meets the requirements: the pearlite structure is 2.5-6 grades, preferably around 4 grades, and the process improves the efficiency by 80%-100%.
Quenching of GB 65Mn Steel
65Mn steel should be started by heating uniformly to 830-860°C (1526-1580°F) until fully heated. After approximately 30 minutes per 25 mm of scribed section, the steel should be quenched in oil immediately.
Tempering of 65Mn Steel
65Mn steel is tempered at 540°C by soaking at the selected temperature for a minimum of 1 hour per 25mm of total thickness. Hardness values at different temperatures after tempering.
65Mn Steel Coil Supply
The elastic deformation capacity of our spring steel within the specified range allows it to withstand a certain load without permanent deformation after the load is removed. We are a professional supplier of various steel coils. We produce high-quality 65Mn steel coils according to international standards and provide a wide range of solutions. Welcome to contact us.
Our Advantage
Manufacturing
With 7000 tons of hydraulic forging press, electric slag furnace and other high-end production equipment, we produce a great variety of steels with the best quality in China.
Testing
In order to control the quality, we have complete testing methods to make sure satisfy the customer needs, including Chemical Analysis, Ultrasonic Test and so on.
Massive Stock
We keep a mass stock are over 20000 tons for various steel type, including steel round bar, steel sheet, alloy steel, carbon steel, stainless steel, mold steel, steel coil and etc.
Customized Service
With a professional steel engineers team, we provide customized service according to your project drawing, also provide professional project experience for your special project, such as materials, processing conditions and etc.
World Wide Delivery
For container shipment, standard packing and bundle round bar and flat bar would be applied. It is necessary to fasten & reinforcement would be done to ensure the safety and better unloading at the destination port.
For less than container shipment, wooden box package would be applied for different size materials. For milled or grounded materials, the anti-rust oil would be needed to ensure the surface condition, within the wooden box.
