Negotiable
The date of payment from buyers deliver within days
Beijing
Long-term effective
2017-12-30 04:58
274
Company Profile
Beijing HOT Mining Tech Co., Ltd.By certification [File Integrity]
Contact:Ms. Kira(Mr.)
Email:
Telephone:
Area:Beijing
Address:Beijing
Website: http://hotmining.kt-water.com/
C | Si | Mn | P,S≤ | Cr | Mo | Ni | |
B2 | 0.75-0.85 | 0.15-0.35 | 0.70-0.90 | 0.035 | 0.40-0.60 | ≤0.25 | ≤0.25 |
B3 | 0.58-0.66 | 1.60-1.90 | 0.65-0.80 | 0.03 | 0.70-0.90 | ≤0.25 | ≤0.25 |
B5 | 0.71-0.80 | 0.25-0.35 | 0.8-1.0 | 0.025 | 0.80-0.96 | 0.03-0.08 | 0.02-0.05 |
B6 | 0.74-0.85 | 0.20-0.40 | 0.92-1.02 | 0.025 | 0.88-0.96 | 0.06-0.13 | 0.05-0.10 |
Microstructure |
Impact toughness(J/sm^2) (different according to ball size) |
Average Volumetric Hardness (HRC) |
Dropping times without Breakage |
M+C | ≥12 | 60~65 | ≥20000 |
M-Martensite C-Carbide |
Inch | Size | T weight |
Tolerance (mm) |
Material |
Surface hardness (HRC) |
Volume hardness (HRC) |
3/4" | D20MM | 0.037+/-0.005 | 2+/-1 | B2 | 63-66 | 63-66 |
1' | D25MM | 0.072+/-0.01 | 2+/-1 | B2 | 63-66 | 63-66 |
11/4'' | D30MM | 0.13+/-0.02 | 2+/-1 | B2 | 63-66 | 63-66 |
11/2'' | D40MM | 0.30+/-0.04 | 2+/-1 | B2 | 62-66 | 62-66 |
2'' | D50MM | 0.6+/-0.05 | 2+/-1 | B2 | 62-65 | 61-64 |
21/2'' | D60MM | 1.0+/-0.05 | 2+/-1.5 | B2 | 62-65 | 60-62 |
21/2'' | D65MM | 1.3+/-0.05 | 2+/-1.5 | B2 | 61-64 | 60-62 |
21/2'' | D65MM | 1.3+/-0.05 | 2+/-1.5 | B3 | 61-63 | 60-62 |
3'' | D75MM | 2.0+/-0.06 | 3+/-2 | B3 | 61-63 | 60-62 |
3''(Hot rolled) | D80MM | 2.0+/-0.06 | 3+/-2 | B3 | 60-63 | 60-62 |
3''(Forged) | D80MM | 2.1+/-0.06 | 3+/-2 | B3 | 60-62 | 53-57 |
31/2'' | D90MM | 3.0+/-0.07 | 3+/-2 | B3 | 60-63 | 59-62 |
4'' | D100MM | 4.1+/-0.15 | 3+/-2 | B3 | 60-63 | 59-62 |
4.5'' | D115MM | 6.3+/-0.15 | 3+/-2 | B3 | 60-63 | 57-60 |
5'' | D125MM | 8.1+/-.03 | 3+/-2 | B3 | 59-62 | 58-60 |