ASTM A105
Carbon steel forgings for piping applications
Covers carbon steel forgings for piping components — flanges, forged fittings and valve parts — for ambient and higher-temperature service.
- Flanges & forgings
- ASME SA-105
- 1 grade in stock range
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What to know before ordering to ASTM A105
The points that decide whether material to ASTM A105 is accepted at inspection.
- A105 flanges are the standard match for A106 B pipe.
- For low-temperature service use ASTM A350 LF2 instead.
- Normalising is required above certain pressure classes — check the specification edition.
Grades and products we supply to ASTM A105
| Grade | Product | Designation on the certificate |
|---|---|---|
| ASTM A106 Gr B | Fittings · Flanges | ASTM A105 |
How ASTM A105 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 A105 — questions buyers ask
What does ASTM A105 cover?
Covers carbon steel forgings for piping components — flanges, forged fittings and valve parts — for ambient and higher-temperature service.
Which grades do you supply to ASTM A105?
ASTM A106 Gr B — see the table on this page for the exact product and designation.
What is the difference between ASTM A105 and ASME SA-105?
ASME SA-105 is the ASME Boiler and Pressure Vessel Code (Section II) adoption of ASTM A105. 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