Alloy 625 Plus

UNS N07716 : AMS 5854 : ASTM B805 : AP16A

General scope

Alloy 625 Plus* is a precipitation-hardenable alloy, which displays corrosion resistance similar to that of A718. In the age hardened condition, A625 Plus offers exceptional resistance to stress-corrosion cracking as well as general pitting and crevice corrosion.

Applications could be considered where severe corrosive environments are of concern, such as deep sour gas wells and a variety of refining and chemical process applications. Marine environments could be considered a candidate where A625 Plus has proven success. The higher strength capability of A625 Plus may also be useful for fasteners and shafts.

  • Alloy 625 Plus is a registered trademark of Carpenter Technology Corp.

Chemical composition

C Si Mn P S Cr Ni Mo Ti Al Fe
Min 19.00 59.00 7.00 1.00 0.00
Max 0.03 0.20 0.20 0.015 0.010 22.00 63.00 9.50 1.60 0.35 10.44

Mechanical properties

Condition: Annealed (Minimum values)

NACE MR0175 limits the supply hardness to 43 HRC max.
U.T.S 150 KSI Min
0.2% Proof Stress 120 KSI Min
Elongation 20 %

Condition: Annealed (Maximum values)

NACE MR0175 limits the supply hardness to 43 HRC max.
U.T.S 150 KSI Min
0.2% Proof Stress 140 KSI Min
Elongation 20 %
Size range: 3”∅ - 8”∅

Primarily manufactured in:

  • Dubai, UAE
  • Edmonton, Canada
  • Houston, Texas
  • Sheffield, England
  • Singapore