RapidBoltMarine & offshore
Seawater-wetted flanges and equipment bolting.
Solid-solution nickel alloy
Inconel 625 Stud Bolts
Alloy 625 stud bolts to ASTM B446 for seawater, acid and high-chloride service, quoted buy-to-order with PMI and EN 10204 3.1 certificates.
BUY-TO-ORDER SUPPLYLEAD TIME QUOTED PER RFQEN 10204 3.1 / 3.2 RECORDS
GRADE OVERVIEW
Alloy 625 stud bolts, specified correctly.
Alloy 625 is a nickel-chromium-molybdenum-niobium alloy with excellent resistance to pitting, crevice corrosion and chloride stress corrosion cracking.
625 is not age hardened like 718, so its strength is lower. Confirm the bolt load requirement before selecting 625 for pressure joints.
View the material reference- GRADE
- ASTM B446
- UNS / TYPE
- UNS N06625
- MATCHED NUT
- Alloy 625 heavy hex nuts
- SIZES
- 1/4"–6" · M5–M150
Reference information only. Your specification and the supplied certificates govern; no stock or equivalence is implied.
WHERE IT IS SPECIFIED
Typical applications
Chemical plant
Acid and mixed-chemistry services.
Flue gas & scrubbers
Pollution-control equipment bolting.
WHAT TO PUT ON YOUR RFQ
Quoted right the first time.
01
Size & length
Diameter from 1/4" to 6" or M5 to M150, thread form (UNC/8UN or metric), and length measured per ASME B16.5 / B16.47 or your drawing for Alloy 625.
02
Nuts, washers & coating
Specify matched heavy hex nuts, through-hardened washers and any coating, such as Xylan/PTFE, so the kit is quoted as one traceable package.
03
Records & inspection
State EN 10204 3.1 or 3.2, PMI, hardness or impact testing and any project ITP so certificates are confirmed before order.
QUESTIONS
Alloy 625 FAQs
REQUEST A QUOTE
Send your Alloy 625 requirement.
Send sizes, quantities, nuts, coating, certificates and required date, or attach a line list or drawing. EMG confirms sourcing, records and lead time against your RFQ.
Sizes & lengths
Diameter, thread, length and quantity per line.
Grade & nuts
ASTM B446 with Alloy 625 heavy hex nuts.
Records
EN 10204 3.1 / 3.2, PMI and testing as specified.
RELATED GRADES