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65Mn

65Mn spring steel, manganese improves hardenability, φ12mm steel oil can be hardened, the surface decarburization tends to be smaller than silicon steel, the comprehensive mechanical properties after heat treatment is better than carbon steel, but there is overheat sensitivity and temper brittleness. 65mn strength, hardness, elasticity and hardenability are higher than that of No. 65 steel, with overheat sensitivity and temper brittleness tendency, water quenching has a tendency to form cracks

Product introduction

65Mn spring steel, manganese improves hardenability, φ12mm steel oil can be hardened, the surface decarburization tends to be smaller than silicon steel, the comprehensive mechanical properties after heat treatment is better than carbon steel, but there is overheat sensitivity and temper brittleness.

65mn strength, hardness, elasticity and hardenability are higher than that of No. 65 steel, which has a tendency of overheating sensitivity and temper brittleness, and water quenching tends to form cracks. The annealed formability is acceptable, the cold deformation plasticity is low, and the weldability is poor.


Typical use

65Mn is used as a small-sized flat, round spring, cushion spring, spring spring, and can also be used to make spring rings, valve springs, clutch reeds, brake springs, and cold drawn steel coil coil springs.

National brands

chemical composition

Brand Carbon C Silicon Si Manganese Mn Phosphorus P Sulfur S Chromium Cr Nickel Ni
65Mn 0.60-0.70 0.17-0.37 0.90-1.20 ≤0.035 ≤0.035 ≤0.25 ≤0.25


performance

Grade status Mechanical properties Hardness HBW≤
tensile strength
Rm/Mpa
Yield Strength
Rp0.2/Mpa
Elongation δ5% rate of reduction in area
ψ (%)
65Mn 980 785 8 30 302


Heat treatment

Grade status Heat treatment temperature / °C
Quenching temperature / ° C and cooling Tempering temperature / °C
65Mn 830 ° C / oil cooling 540 ° C


Application field

  • Industrial mold

    Industrial mold

  • Railway field

    Railway field

  • Ship field

    Ship field

  • Nuclear power

    Nuclear power

  • Mine field

    Mine field

  • Construction machinery

    Construction machinery

  • Petrochemical

    Petrochemical

  • Electronic appliances

    Electronic appliances

ADVANTAGE
Our advantage

Integrity, customer first, excellence

Rich industry experience

RICH INDUSTRY EXPERIENCE

We have been engaged in the research and development and manufacture of metal products for many years, and have accumulated rich experience in the industry. We provide stainless steel coils, stainless steel hot and cold rolled sheets, stainless steel flat plates, etc., which are recognized by the industry with integrity, strength and products!

Advantage1

Reliable product quality, reasonable price

RELIABLE PRODUCT QUALITY

Strive to meet the market demand for various specifications, and to ensure quality, low prices, welcome new and old customers to negotiate and discuss.

Advantage2

Logistics guarantee · perfect after-sales service

STRONG PRODUCTION STRENGTH

We show you the extremely accurate order status and delivery tracking system. The company has obtained ISO9001 quality system certification, and integrates R&D, production, sales and after-sales into a high-tech enterprise. The company has a perfect after-sales service system.

Advantage3
ADVANTAGE
Logistics advantage

Integrity, customer first, excellence

The logistics system escorts your goods

Processing, packaging, distribution, one-stop service

(All kinds of waterproof, export packaging)

Provide free exchanges to reduce your production costs

Orders arrive within 24 hours of delivery