Grade | Be | Co | Ni | Pb | Cu |
17200-HT 17200-M | 1.8-2.0 | Co+Ni<0.2 | -- | Balance | |
1720HMB | 1.8-2.0 | Co+Ni+Fe<0.6 | Balance | ||
C17500-HT | 0.4-0.7 | 2.4-2.7 | -- | -- | Balance |
C17530-HT | 0.15-0.5 | 0.35-0.6 | -- | -- | Balance |
Grade | State | Heat Treatment | Tensile Strength |
Yield Strength |
Elongation | Fatigue Hardness | Vickers Hardness | Conductivity Precentage | |
HTC17200 | 1/4H | -- | 56-62 | 42-57 | 20-45 | 22-25 | 121-185 | 15-19 | |
1/2H | -- | 59-71 | 52-67 | 12-30 | 22-27 | 176-216 | 15-19 | ||
H | -- | 70-85 | 63-81 | 2-18 | 25-27 | 216-287 | 15-19 | ||
AT | 3 hr 315'C | 116-138 | 98-124 | 3-15 | 28-32 | 353-413 | 22-28 | ||
1/4HT | 2 hr 315'C | 123-145 | 105-131 | 3-10 | 28-32 | 353-424 | 22-28 | ||
1/2HT | 2 hr 315'C | 130-152 | 112-138 | 1-8 | 30-33 | 373-435 | 22-28 | ||
HT | 2 hr 315'C | 133-155 | 116-145 | 1-6 | 32-35 | 373-446 | 22-28 |
Surface Finish | Definition | Application |
2B | Those finished, after cold rolling, by heat treatment, picking or other equivalent treatment and lastly by cold rolling to given appropriate luster. | Medical equipment, Food industry,Construction material, Kitchen utensils. |
BA |
Those processed with bright heat treament after cold rolling. |
Kitchen utensils, Electric equipment, Building construction. |
NO.3 | Those finished by polishing with No.100 to No.120 abrasives specified in JIS R6001. | Kitchen utensils, Building construction. |
NO.4 | Those finished by polishing with No.150 to No.180 abrasives specified in JIS R6001. | Kitchen utensils, Building construction, Medical equipment. |
HL | Those finished polishing so as to give continuous polishing streaks by using abrasive of suitable grain size. | Building construction. |
NO.1 | The surface finished by heat treament and picking or processes corresponding there to after hot rolling. | Chemical tank, pipe. |