RapidBoltSeawater cooling
Heat-exchanger and cooling-water flanges.
Super austenitic stainless (6-Mo)
6-Mo 254 SMO Stud Bolts
6-Mo S31254 stud bolts for seawater and chloride flanges where an austenitic alternative to super duplex is specified, quoted buy-to-order.
BUY-TO-ORDER SUPPLYLEAD TIME QUOTED PER RFQEN 10204 3.1 / 3.2 RECORDS
GRADE OVERVIEW
254 SMO stud bolts, specified correctly.
S31254 is a 6% molybdenum super austenitic stainless steel with high resistance to pitting and crevice corrosion in seawater and chloride-bearing process streams.
254 SMO is a trade name of Outokumpu. EMG supplies to UNS S31254 and the product standard on your specification; trade-name material is quoted only when sourced and certified as such.
View the material reference- GRADE
- ASTM A276 / A479 / A182 F44
- UNS / TYPE
- UNS S31254
- MATCHED NUT
- UNS S31254 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
Pulp, paper & chemical
Bleach plant and chloride process service.
Desalination
Flanges where austenitic 6-Mo is the line material.
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 S31254.
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
254 SMO FAQs
REQUEST A QUOTE
Send your 254 SMO 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 A276 / A479 / A182 F44 with UNS S31254 heavy hex nuts.
Records
EN 10204 3.1 / 3.2, PMI and testing as specified.