Ko ngā taipitopito e whai ake nei mō ā mātou hua 1J80:
Te hanganga matū
| hanganga | C | P | S | Mn | Si |
| ≤ | |||||
| Ihirangi(%) | 0.03 | 0.020 | 0.020 | 0.60~1.10 | 1.10~1.50 |
| hanganga | Ni | Cr | Mo | Cu | Fe |
| Ihirangi(%) | 79.0~81.5 | 2.60~3.00 | - | ≤0.2 | Para |
Pūnaha maimoatanga wera
| tohu toa | Waenga whakawera | pāmahana whakamahana | Puritia te pāmahana i te wā/h | Te tere whakamatao |
| 1j80 | Hauwai maroke, korehau rānei, kaua e neke ake te pēhanga i te 0.1 Pa | I te taha o te oumu e wera ana i te 1100~1150ºC | 3~6 | I roto i te 100 ~ 200 ºC / h, whakamatao tere ki te 400 ~ 500 ºC, tere ki te 200 ºC, utuhia. |
150 0000 2421