supply of 65mn manganese strip, manganese steel strip, 65mn steel packing strap, manganese steel strip specifically for packaging, available for slitting. 供应65Mn锰带 锰钢带 65MN打包钢带 打包装专用锰钢带 可分条

   Main products: 65 manganese spring steel strips, manganese steel strips, SK5 and SK7 spring steel strips, spring tension steel strips, stainless steel materials, 8K to 1.2K mirror stainless steel, copper materials, aluminum materials, and various other materials (Note: materials can be customized and processed according to customer requirements and specifications).

     65Mn spring steelIt may overheat; be careful with the heating temperature and holding time. It is recommended to heat at 820 degrees and hold for an appropriate duration. Tempering temperature: 320 degrees, with sufficient time.

Hardness: 4.5–4.8 HRC. Good performance in use.

Standards for 65Mn steel strip:

Standard for 65mn spring steel strip: GB/T 1222-2007

65Mn spring steel; manganese enhances hardenability. Steel with a diameter of φ1.2mm can be hardened in oil. The tendency for surface decarburization is lower than that of silicon steel. After heat treatment, its overall mechanical properties are superior to those of carbon steel. However, it is sensitive to overheating and has temper brittleness. It is used for various small-sized flat and round springs, seat cushion springs, spring springs, as well as for manufacturing spring rings, valve springs, clutch springs, brake springs, and cold-drawn steel wire cold-rolled spiral springs.

Rockwell hardness of 65Mn raw materials:                                     

                                                             1. Hot rolling hardness: 240~270HB

2. Hardness in cold rolling soft state: 190–220 HB

3. Hardness in cold rolling hard state: 300~340HB

4. Heat treatment hardness: 38~60HRC

Specs for 65Mn spring steel strip:

                                     Round shape: Φ5.5～16mm rolled material: Φ16～160mm forged material: Φ160～450mm

Hardness. Both elasticity and hardenability are higher than those of Grade 65 steel. The 65MN steel strip exhibits overheating sensitivity and temper brittleness; water quenching tends to cause cracking. Machinability is acceptable in annealed state, cold deformation plasticity is low, and welding performance is poor. Plate springs under moderate loads, spiral springs with diameters of 7–20 mm, and spring washers. Spring rings. High wear-resistant parts, such as grinding machine spindles, spring chucks, precision machine tool lead screws, cutting tools, ring sets on spiral roller bearings, and railway rails.