bolt & nuts, machine-made industry, food industry, paper mill equipment.
13. Delivery time
Generally within 15 days upon receipt the PO, as per the q’ty.
ISO, BV, TUV, SGS, mill test certificate
Good quality & fumigated wooden box, can better protect the bars.
We have much experience in producing hot forged round bar & enjoy good reputations.
Grade and Size detail of our products
Chemical composition ( in weight % )
Mechanical Properties: Tensile strength (MPa): quenching and tempering, min1080
elongation 5 (%): quenching and tempering, min10
impact energy Akv (J): quenching and tempering, min39
Hardness: annealing, min285HB
A) Heat treatment and microstructure specifications: Heat treatment specifications: 1) annealing, 680 - 700 ℃ tempering air cooling; 2) quenching, 950 -1050 ℃ oil cooling; 3) tempering 275-350 ℃ air cooling. Microstructure: Organizing for the martensite type.
B) Delivery status: generally heat treatment delivery, the treatment types specified in the contract; not indicated, by not heat treatment delivery.
The specified properties are for bar products in ASTM A276. The properties may not be necessarily similar to other forms such as forgings and plates.
Typical applications of grade 431 stainless steels include the following: