The hardness nke iko dị elu nke ukwuu, mgbe ojiji na-adịghị mfe ọkọ na ọkọ na izugbe sodium calcium iko vickers hardness (HV) bụ 400 ~ 480MPa, na ike nke plastic bụ dịtụ ala, mfe ọkọ, dị ka polyvinyl chloride. (PVC) HV bụ 10 ~ 15MPa, polyester thermosetting (PET) bụ 10 ~ 21MPa, polyethylene (PE) bụ 5 ~ 8MPa, polypropylene (PP) bụ 6 ~ 11MPa.
Oge nzipu: Jan-10-2020