• SPRING STEEL - 65Mn / 65Г
  • SPRING STEEL - 65Mn / 65Г
 
  • 65Mn / 65Г
  • 65Mn / 65Г

SPRING STEEL
65Mn / 65Г

65Mn Spring steel Mechanical Properties:

Manganese improve hardenability, phi 12 mm steel oil can be hardening, surface decarburization tend to be smaller than silicon steel, after heat treatment of the comprehensive mechanical performance is better than that of carbon steel, but there are overheating sensitivity and temper brittleness .

Tensile strength of sigma b (MPa) : 980 (100) or higher.

Yield strength sigma s (MPa) : 784 (80) or higher.

Elongation delta (%) : 8 or higher.

Reduction of area bits (%) : 30 or higher.

65Mn steel Chemical Composition:

C Si Mn P S Cr
0.62-0.70 0.17-0.37 0.90-1.20 ≤0.035 ≤0.035 ≤0.035
  • Introduction

  • Heat Treatment

  • Applications

  • Equivalent Grade

  • 65Mn Spring steel introduction:

    65Mn steel has high hardness, good hardenability, decarburization tend to be less, the price is low, the advantages of good machinability, but it has overheating sensitivity, easy generation quenching crack, and temper brittleness, be widely used.

  • Heat treatment specification

    830 ℃ quenching + 20 ℃, oil cooling; Tempering 540 ℃ + 50 ℃ (special needs, plus or minus 30 ℃). Microstructure: troostite.

    ANNEALING

    830 ℃ quenching + 20 ℃, oil cooling

    HARDENING

    Hardness: hot rolled, 302 hb or less; Cold drawn + heat treatment, 321 hb or less.

    TEMPERING

    Tempering 540 ℃ + 50 ℃ (special needs, plus or minus 30 ℃).

  • 65Mn Spring steel Applications:

    Used for small size flat, round spring, seat cushion, spring, spring wind, also can make the spring ring, reed valve spring, clutch, brake spring cold rolled and cold drawn steel wire spiral spring. High wear-resistant parts, such as grinding machine spindle. Spring clip. Precision machine screw. Cutter. Embossing roller bearing on the ring. The railway rail, etc.

HOT STEEL

Huangshi Baoyi Materical Co., ltd.

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