Product Introduction
It has high and uniform hardness and good wear resistance. It is used to make small section quenching and tempering parts with large load and large normalizing parts with small stress. Usage: used for making various bearing rings and rolling bodies. For example: making internal combustion engine, electric locomotive, automobile, tractor, machine tool, steel rolling machine, drill Steel rollers and ferrules for transmission bearings of exploration machines, mining machinery, general machinery and high-speed rotating machinery with high load. Products: GB/T18254 GCr15 Stainless Bearing Steel Tube. Standard: SKF/ ASTM/DIN/JIS/BS/GB. Size(mm): OD:8mm ~ 101.6mm; WT:1.0mm ~ 10mm. Length: Fixed(6m,9m,12,24m) or normal length(5-12m).
Product Display
Specifications of Gcr 15/AISI 52100 Bearing Steel Pipe
| GB | ISO | ASTM | JIS | DIN | NF | Sweden |
| GB/T18254 | 9001:2008 | 52100 | SUJ2 | 100Cr6 | 100C6 | SKF3 |
GB18254 GCr 15 Bearing Pipe and Tube Features
1. Cleanliness and freedom from objectionable microscopic slag type inclusions.
2. Shallow decarburized surface.
3. Good surface quality.
4. Excellent micro-structure uniformity.
5. Tight tolerances, resulting in reduced machine time.
6. Wear resistance, long service life.
Third Party inspection acceptable. such as SGS, BV etc.
Delivery Condition
1. Ordinary annealing: heating at 790-810 ℃, furnace cooling to 650 ℃, air cooling - hb170-207. 2. Isothermal annealing: 790-810 ℃ heating, 710-720 ℃ isothermal, air cooling - hb207-229. 3. Normalizing: 900-920 ℃ heating, air cooling - hb270-390. 4. High temperature tempering: 650-700 ℃ heating, air cooling - hb229-285. 5. Quenching: 860 ℃ heating, oil quenching - hrc62-66. 6. Low temperature tempering: 150-170 ℃ tempering, air cooling - hrc61-66. 7. Carbonitriding: 820-830 ° C for 1.5-3 hours, oil quenching, - 60 ° C to - 70 ° C cryogenic treatment + 150 ° C to + 160 ° C tempering, air cooling - HRC ≈ 67.Applications
2)Chemical composition
| CNS-SUJ2 | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Mo(%) | Ni(%) | Cu(%) |
| 0.95-1.10 | 0.15-0.35 | ≦0.5 | ≦0.025 | ≦0.025 | 1.3-1.6 | ≦0.08 | ≦0.25 | ≦0.25 | |
| GB-GCr15 | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Mo(%) | Ni(%) | Cu(%) |
| 0.95-1.05 | 0.15-0.35 | 0.25-0.45 | ≦0.025 | ≦0.025 | 1.40-1.65 | ≦0.1 | ≦0.3 | ≦0.25 | |
| JIS-SUJ2 | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Mo(%) | Ni(%) | Cu(%) |
| 0.95-1.10 | 0.15-0.35 | ≦0.5 | ≦0.025 | ≦0.025 | 1.3-1.6 | ≦0.08 | ≦0.25 | ≦0.25 | |
| ASTM-E52100 | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Mo(%) | Ni(%) | Cu(%) |
| 0.98-1.10 | 0.15-0.35 | 0.25-0.45 | ≦0.025 | ≦0.025 | 1.3-1.6 | ≦0.1 | ≦0.25 | ≦0.35 | |
| 100Cr6（W3） | C(%) | Si(%) | Al(%) | Mn(%) | P(%) | S(%) | Cr(%) | Cu(%) | |
| 0.93-1.05 | 0.15-0.35 | ≦0.05 | 0.25-0.45 | ≦0.025 | ≦0.015 | 1.35-1.60 | ≦0.3 |
| Thermal Properties | Conditions | ||
| T (0C) | Treatment | ||
| Thermal Expansion (10-6/0C) | 11.9 | 0-100 | Annealed |