Alloy steel astm a193 b7 material is considered as the most suitable for botls and nuts to be used at temperature below 450 degree C, with a minimum effect on its structural strength during application at a high temperature.
astm a193 b7 alloy steel bar specification for astm a193 b7 stud bolts and buts
1. astm a193 b7 steel round bars production line: EAF + LF+ CC + HR
2. astm a193 b7 alloy steel round bar further processing: cold drawn, peeled, QT


3. astm a193 b7 alloy steel chemical composition:
C | SI | MN | S | P | CR | MO |
0.37-0.49 | 0.15-0.35 | 0.65-1.10 | 0.035(MAX) | 0.035(MAX) | 0.75-1.20 | 0.15-0.25 |
4. astm a193 b7 alloy steel mechanical property:
Dia | Minimum temperature | Tensile strength | Yield strength | Elongation | Reduction of area | Hardness |
Below 65mm | 593 ° C | 860 | 720 | 16 | 50 | 35 HRC |
65mm to 100mm | 593 ° C | 795 | 655 | 16 | 50 | 35 HRC |
100mm to 160mm | 593 ° C | 690 | 510 | 18 | 50 | 29 HRC |
5. astm a193 b7 steel hexagonal bars is mainly cold drawn hexagonal bars which is used for hexagonal nuts. The diameters we supply is from 16mm to 75mm.
6. astm a193 b7 round bar picture:
astm a193 b7 hot rolled round bars
astm a193 b7 cold drawn bars
astm a193 b7 peeled bars

7. astm a193 grade b7 steel bars inspection after quenching and tempering:





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