ASTM A193
Alloy and stainless steel bolting for high-temperature or high-pressure service
Covers alloy and stainless steel bolting for high-temperature or high-pressure service — stud bolts and bolts in grades B7, B8, B8M, B16 and others.
- Bolting
- ASME SA-193
- 5 grades in stock range
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What to know before ordering to ASTM A193
The points that decide whether material to ASTM A193 is accepted at inspection.
- B7 is chrome-moly alloy steel; B8 is 304 and B8M is 316 stainless.
- Class 1 is solution-treated; Class 2 is strain-hardened for higher strength.
- Nuts are ordered separately to ASTM A194.
Products made to ASTM A193
How ASTM A193 fits into an order
A purchase order line is only complete when it names the material standard, the dimensional standard and the inspection document. Miss one and the mill, the inspector and the buyer can each read the order differently.
ASTM A193 — questions buyers ask
What does ASTM A193 cover?
Covers alloy and stainless steel bolting for high-temperature or high-pressure service — stud bolts and bolts in grades B7, B8, B8M, B16 and others.
Which grades do you supply to ASTM A193?
SS 304, SS 304L, SS 316 / 316L, SS 321, SS 347 — see the table on this page for the exact product and designation.
What is the difference between ASTM A193 and ASME SA-193?
ASME SA-193 is the ASME Boiler and Pressure Vessel Code (Section II) adoption of ASTM A193. The technical requirements are usually identical to a specific ASTM edition; pressure-equipment codes call for the ASME designation, and most mill certificates show both.
Do you supply certificates to this standard?
Yes. Material is supplied with mill test certificates to EN 10204 3.1 showing the standard, grade and heat number; 3.2 with third-party inspection on request.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026