Does the subject want to ask "how many times can the No.45 steel die be punched"? 2W to 5W times. The plastic mould template is made of 45 steel, and the product has no special requirements. Under normal injection pressure, it can be injected for 2 ~ 5 times. 45 steel, also known as oil steel, has a thickness of1-4 mm. According to the use, it belongs to a kind of structural steel of medium carbon steel or medium carbon structural steel.