| Analyse (Mass %) | |||||||
|---|---|---|---|---|---|---|---|
| C | Si | MN | P | S | Cr | Ni0 | Mo |
| 0,15 – 0,19 | max. 0,4 | 0,5 – 0,6 | max. 0,015 | max. 0,005 | 1,5 – 1,8 | 1,4 – 1,7 | 0,25 – 0,35 |
Gear Steel
DNV High Grade Certification for random length bars in 18CrNiMo7-6, ISO-B quality.
Discs are sawn from Random length bars and Buderus Edelstahl ISO-B technology ensures consistent properties as required by DNV high grade, for rounds up to Dia 1450mm. This is confirmed by certificate issued by Det Norske Veritas.
Grade 1.6587
DNV High Grade
Designation:
(Mass%) acc. to
EN 10084
ME quality acc. to
ISO 6336 5
DIN 3990 5
ZF1A
Delivered Condition:
Heat treatment:
< 500 mm: annealed
Hardness: max. 210 HB
> 500 mm: pre-hardened and tempered
Quality: ISO-B, High Grade
High Cleanliness:
acc. to DIN 50602, k 4: max. 2
acc. to ISO 4967:
| A | B | C | D | DS |
|---|---|---|---|---|
| Thin
/ Thick |
Thin
/ Thick |
Thin
/ Thick |
Thin
/ Thick |
Thin
/ Thick |
| 1.0/1.0 | 0.5/0.5 | 1.0/1.0 | 1.0/1.0 | 1.0/1.0 |
Sulphur content: max. 0.005%
Hardenability HH EN 10084
Phosphorous content: max. 0,015%
Ultra sonic tested
Oxygene content: max. 25 ppm
Incl. mill.-cert . acc. to
Largely isotropic material properties
EN 10204-3.1
High Availability:
| Recommended heat treatment: | |
|---|---|
| Softening | 650 – 700 °C |
| Carburising | 880 – 980 °C |
| Core hardening | 830 – 870 °C |
| Case hardening | 780 – 820 °C |
| Process annealing | 630 – 650 °C |