Chemical composition:
|
Trademark |
Chemical composition | |||||||
|
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Cu | |
|
≤ | ||||||||
|
15Mn |
0.12～0.18 |
0.17～0.37 |
0.70～1.00 |
0.035 |
0.035 |
0.30 |
0.25 |
0.25 |
|
20Mn |
0.17～0.23 |
0.17～0.37 |
0.70～1.00 |
0.035 |
0.035 |
0.30 |
0.25 |
0.25 |
Mechanical properties:
|
Trademark |
The sample blank Size / mm |
Heat treatment process |
Mechanical properties |
Delivery status hardness of steel / HBS | |||||||
|
Normalizing |
Quench |
Tempering |
σb/MPa |
σs/MPa |
δ5(％) |
ψ(％) |
Ak/J |
≤ | |||
|
≥ |
未热处理 |
退火钢 | |||||||||
|
15Mn |
25 |
920 |
|
|
410 |
245 |
26 |
55 |
|
163 |
|
|
20Mn |
25 |
910 |
|
|
450 |
175 |
24 |
50 |
|
197 |
|
Characteristics and Uses:
15Mn is a high manganese carbon-hardened steel, its performance is similar with 15 gauge steel, but the hardenability, strength and ductility than the 15-gauge steel is higher. Steel after carburizing or cyanide and toughness to get the same hard surface, the center has a higher strength, carburizing and quenching in the form of soft steel is less than 15 points, cutting performance is also better than the 15-gauge steel, welded good performance. For the manufacture of the central part of the mechanical properties are higher, and the parts to be carburized.
20Mn is a high manganese carbon-hardened steel, its performance is similar with the 15Mn steel, hardenability, strength and ductility than 20 steel is good, cutting also increased, low-temperature impact toughness and good weldability. For the manufacture of camshafts, gears, couplings, hinges, pins, tow bars, crank shafts, bearing rings and so on.
15Mn is a high manganese carbon-hardened steel, its performance is similar with 15 gauge steel, but the hardenability, strength and ductility than the 15-gauge steel is higher. Steel after carburizing or cyanide and toughness to get the same hard surface, the center has a higher strength, carburizing and quenching in the form of soft steel is less than 15 points, cutting performance is also better than the 15-gauge steel, welded good performance. For the manufacture of the central part of the mechanical properties are higher, and the parts to be carburized.
20Mn is a high manganese carbon-hardened steel, its performance is similar with the 15Mn steel, hardenability, strength and ductility than 20 steel is good, cutting also increased, low-temperature impact toughness and good weldability. For the manufacture of camshafts, gears, couplings, hinges, pins, tow bars, crank shafts, bearing rings and so on.
