High-carbon steel for ball bearings with higher hard enability than, for example, ŁH15, 100Cr6, for elements with a cross section of more than 30mm, for balls and bearing needles, roller bearing rings and discs, precision bearings and shafts. The steel is suitable for working at elevated temperatures and corrosive environment. It is characterized by high resistance to abrasion and tempering. It is hardened transverselly to a thickness of 50mm
Standard | Steel Grade | |||||||||||
Chemical Composition % | ||||||||||||
C: | Mn: | Si: | P: | S: | Cr: | Al: | Mo: | Ni: | Ti: | Cu: | O: | |
PN | ŁH15SG | |||||||||||
0.95 - 1.10 | 0.95 - 1.25 | 0.40 - 0.65 | <0.027 | <0.02 | 1.30 - 1.65 | - | - | <0.3 | - | <0.25 | - | |
ISO | 100CrMnSi6-4 - 1.3520 - 3520 | |||||||||||
0.93 - 1.05 | 1.0 - 1.2 | 0.45 - 0.75 | <0.025 | <0.03 | 1.40 - 1.65 | <0.05 | <0.1 | - | - | <0.3 | <0.0015 | |
DIN | 100CrMn6 - 100 CrMn 6 | |||||||||||
0.93 - 1.05 | 1.0 - 1.2 | 0.45 - 0.75 | <0.025 | <0.015 | 1.40 - 1.65 | <0.05 | - | - | - | <0.3 | - | |
UNE | F-1312 - F1312 | |||||||||||
0.95 - 1.10 | 0.95 - 1.25 | 0.45 - 0.75 | <0.03 | <0.025 | 1.40 - 1.65 | - | - | - | - | - | - | |
AFNOR | 100 CM 6 - 100CM6 | |||||||||||
0.90 - 1.05 | 1.00 - 1.20 | 0.50 - 0.70 | <0.025 | <0.015 | 1.40 - 1.65 | <0.05 | <0.1 | <0.25 | - | <0.3 | - | |
GOST | ShCh15SG - SHKH15SG - ШХ15СГ - SHH15SG | |||||||||||
0.95 - 1.05 | 0.9 - 1.2 | 0.40 - 0.65 | <0.027 | <0.02 | 1.30 - 1.65 | - | - | <0.3 | <0.01 | <0.025 | <0.0015 | |
PN | NCMS | |||||||||||
0.95 - 1.10 | 0.90 - 1.20 | 0.40 - 0.70 | <0.03 | <0.03 | 1.30 - 1.65 | - | - | - | - | - | - | |
UNS | K 19195 - K19195 - ASTM A485 - A 485 | |||||||||||
0.85 - 1.00 | 1.40 - 1.70 | 0.50 - 0.80 | <0.025 | <0.025 | 1.40 - 1.80 | - | <0.1 | <0.25 | - | <0.35 | - | |
ČSN | ČSN 14 209 - ČSN 14209 | |||||||||||
0.90 - 1.10 | 0.90 - 1.20 | 0.35 - 0.65 | <0.027 | <0.03 | 1.30 - 1.65 | - | - | <0.3 | - | <0.25 | - | |
Mechanical properties | ||
Heat treatment | Tensile strength | Hardness |
After annealing with limited hardness | - | ≤ 241 HB |
After spheroidizing annealing | 570 - 720 MPa | 179 - 217 HB |
After heat hardening and spheroidizing annealing | 590 - 780 MPa | 179 - 235 HB |
After hardening and tempering | - | ≤ 61 HRC |
Physical properties | ||
Density, ρ | ~7,85 kg/dm³ | |
Linear expansion coefficient - α | ~11,9 ⋅ 10⁻⁶ K⁻¹ | |
Process of heat treatment | ||
Softening annealing | 750 - 800℃ | |
Hardening | 830 - 870℃ | in oil or water |
Tempering at | 150 - 170℃ | |
High-carbon steel for ball bearings with higher hardenability than, for example, ŁH15, 100Cr6, for elements with a cross section of more than 30mm, for balls and bearing needles, roller bearing rings and discs, precision bearings and shafts. The steel is suitable for working at elevated temperatures and corrosive environment. It is characterized by high resistance to abrasion and tempering. It is hardened transverselly to a thickness of 50mm.
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