65Mn Carbon Steel Plate : Uses, Composition, Properties
What is steel grade 65Mn?
Is 65Mn carbon steel good?
What metal is 65Mn？
What is the HRC of 65Mn carbon steel?
How do you heat treat 65Mn steel?
What is 65Mn steel used for?
Knife
Chopped knife,Sugar cane knife,Firewood knife
Garden Tools
Bypass Pruners, Pruning Shears, Grass Shears, Hedge Shears, Saws, Lawn Leaf Rake, Garden Soil Rake, Garden Shovel, Hoe.
Mechanical Transmission Parts
Gear,Chain.
Auto Parts
Brake Dies,Seat Buckle.
Due to its high hardness, strength, and wear resistance, 65Mn steel is widely used in the following fields:
Springs: Used for manufacturing various mechanical springs, automotive suspension springs, clutch springs, etc.
Cutlery and Tools: Suitable for making gardening tools, hand tools, saw blades, etc.
Hammers and Impact Tools: Used for making various hammer heads, impact tools, chisels, etc.
Wear-resistant Parts: Widely used for making bearings, gears, chains, and other parts that require high wear resistance.
Highlight: Cutlery Steel
Edge Heat Treatment and Full Piece Heat Treatment: Edge heat treatment hardness can reach up to 50 HRC, while full piece heat treatment generally achieves 48-50 HRC. Many customers report that 65Mn performs exceptionally well in terms of sharpness and toughness. In agricultural tools, it can cut through wire without chipping; in slicing knives, it offers clean cuts and good durability; in crushing knives, it shows good toughness and longevity, reducing the need for frequent replacements.
Characteristics of Cutlery Steel
High Carbon Content: Can easily be heat-treated to achieve high hardness, but has relatively high brittleness and poor formability. Regular hot-rolled steel bends to 60 degrees before cracking (many carbon steels can bend to 90 degrees with a large radius).
Manganese Content: Provides some elasticity and fatigue resistance, making it a type of spring steel.
Market Acceptance
Medium to high special steel customized 65Mn plates have been accepted for a long time. Some customers report using it as wear-resistant steel, stating that the wear resistance of untreated 65Mn plates with high carbon and manganese content can match that of standard NM400 steel.
AISI 1065 Carbon Steel,JIS Sup6 (CN 65Mn#) Download
Properties of 65Mn Carbon Steel
| Property | Value |
| Density | 7.85 g/cm3 |
| Tensile strength |
≥1274MPa |
| Yield Strength |
≥785MPa |
| Elongatio | ≥8% |
| Reduction of Area | ≥30% |
| Impact Toughness | ≥24% |
| Annealed Hardness |
217-255 |
| Quenched Hardness | ≥45 |
How Is 65Mn Carbon Steel Made?
The smelting process is basically the same for the 65Mn/Sup 6/1065 and the normal mild steel, but more requirement for the purtity of steel for 65Mn steel. During the smelting process, the carbon element is added to the expected value and making the carbon element distriuted evenly by technical method.
What Are The Advantages And Disadvantages Of Using 65Mn Gauge Steel?
High Strength and Hardness: With proper heat treatment, the hardness can reach HRC 55-62, making it suitable for manufacturing high-strength springs and wear-resistant parts, such as knives.
Good Elasticity and Toughness: Despite its high strength and hardness, 65Mn steel maintains good elasticity and toughness, allowing it to withstand significant impact loads.
Excellent Wear Resistance: Due to its high hardness, 65Mn steel has excellent wear resistance, making it ideal for producing tools and parts that require high wear resistance.
Relatively Low Cost: Compared to other high-performance alloy steels, the material cost of 65Mn steel is lower, offering a high cost-performance ratio
Prone to Quenching Cracks: Due to its high carbon content, 65Mn steel is susceptible to quenching cracks during the quenching process. It requires strict control of quenching and tempering processes.
Poor Corrosion Resistance: 65Mn steel has poor corrosion resistance and can easily rust in humid environments. It requires rust prevention treatment or surface coating protection.
Moderate Machinability: 65Mn steel has good machinability when annealed, but it becomes difficult to machine when hardened, requiring appropriate machining methods and tools.
Poor Weldability: Due to its tendency to crack during welding, 65Mn steel requires specialized welding equipment.
OUR PROCESS
Leveling
Welding
Shearing
Bending
Slitting
Laser Cutting
Plasma Cutting
Oxyfuel Cutting
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