 
  
  
                | Grade | Chemical composition | Mechanical properties | Physical properties | ||||
|---|---|---|---|---|---|---|---|
| Co+Ni % | WC % | Hardness HAR | T.R.S MPa | Density g/cm3 | |||
| YGH30 | 15 | 85 | >83.5 | >2520 | 13.8~14.2 | Cold rolling of ribbed steel bars | |
| YG15 | 15 | 85 | >86.5 | >2220 | 13.9~14.2 | ||
| Specification | External diameter (D±0.02) | Internal diameter (d±0.02) | High (H±0.02) | Specification | External diameter (D±0.02) | Internal diameter (d±0.02) | High (H±0.02) | 
|---|---|---|---|---|---|---|---|
| GS123082015 | 123 | 82 | 15 | GS150095015 | 150 | 95 | 15 | 
| GS125082015 | 125 | 82 | 15 | GS150095020 | 150 | 95 | 20 | 
| GS128082015 | 128 | 82 | 15 | GS150096015 | 150 | 96 | 15 | 
| GS130082015 | 130 | 82 | 15 | GS150096020 | 150 | 96 | 20 | 
| GS130082016 | 130 | 82 | 16 | GS180125015 | 180 | 125 | 15 | 
| GS138080018 | 138 | 80 | 18 | GS180125020 | 180 | 125 | 20 | 
| GS138090018 | 138 | 90 | 18 | GS205150015 | 205 | 150 | 15 | 
| GS145095015 | 145 | 95 | 15 | GS205150020 | 205 | 150 | 20 | 
| GS145095020 | 145 | 95 | 20 | GS220140025 | 220 | 140 | 25 | 
| GS147095015 | 147 | 95 | 15 | ? | ? | ? | ? |