flexibility and higher hardenability than 55Si2Mn. For railway vehicles, automobile and tractor industry to bear a greater load on the production of flat spring 30mm or less in diameter coil spring.
60Si2Mn heat treatment specifications
60Si2Mn heat treatment specifications: quenching 870 ℃ ± 20 ℃, oil cooling; tempering 480 ℃ ± 50 ℃ (special needs, ± 30 ℃). Microstructure: Tempered troostite.

 Delivery status: hot-rolled steel to heat treatment or heat treatment delivery, cold-drawn steel with heat treatment delivery.

Hot Delivery Specification: 2.0 ~ 18.0mm, with annealing and non-annealed state. Cold delivery specifications: 0.3 ~ 4.3mm (steel)
 60Si2Mn chemical composition
Carbon C: 0.56 ~ 0.6

 Si Si: 1.50 ~ 2.00

 Manganese Mn: 0.60 ~ 0.90

Sulfur S: ≤ 0.035

Phosphorus P: ≤ 0.035

Chromium Cr: ≤ 0.35

Ni-Ni: ≤ 0.35

 Copper Cu: ≤ 0.25 [1] [2] [3] [4]
Corresponds to the national brands
Corresponding to the British brands: II92600

 Corresponding to the Japanese brands: SUP7

 Corresponding to the German grade: 60SiCr7

Corresponding to the British brands: 25II60

For French brands: 61SiCr7