UNS S31277 Bolts
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We produce UNS S31277 bolts,S31277 bolts,UNS S31277 bolting,UNS S31277 Hex Head Bolts,UNS S31277 studbolt,UNS S31277 Heavy Hex head bolts,UNS S31277 Stud Bolts,UNS S31277 Anchor Bolt,UNS S31277 Eye Bolt,UNS S31277 U Bolts,UNS S31277 Structural Bolts,UNS S31277 Step Bolt,UNS S31277 Flange Bolt,S31277 Screw Thread Eye Bolt,S31277 Head Plow Bolts,S31277 Square Head Bolts,S31277 Hexagonal Bolts,S31277 J-Bolts,UNS S31277 Bent Eye Bolts,UNS S31277 Elevator Bolts,UNS S31277 Step Bolts,UNS S31277 Tap Bolts,UNS S31277 Tension Control Bolts,UNS S31277 Shoulder Bolt,S31277 bent bolts,UNS S31277 headed bolts,S31277 Heavy Hex head bolts,UNS S31277 Timber Bolts,UNS S31277 Lag Bolts,UNS S31277 Timber Bolts,UNS S31277 Hanger Bolt,UNS S31277 Button Head Bolts,S31277 Tie Bolt,UNS S31277 Hexagon Bolt,UNS S31277 Hexagon Cap Screw Bolt from china

The type of UNS S31277 anchor bolts that we could do is UNS S31277 straight anchor bolts, bent anchor bolts and headed anchor bolts

The type of UNS S31277 bent bolts that we could do is S31277 bent anchor bolts, u-bolts, square bent u-bolts, j-bolts, bent tie bolts, bent check bolts, bent hook rail bolts, bent I-bolts, and custom special bent bolts.

The type of UNS S31277 headed bolts that we could do is UNS S31277 Cap Screws head bolts,Hex head bolts,Heavy Hex head bolts,Lag Bolts,Square Head bolts,Step Bolts,Dome Head bolts,Carriage boltds,Socket Head Bolts

We could produce UNS S31277 non-standard and speciality large bolts from 1/4” all the way to 4” and in metric sizes from M8 to M100.

The surface finish of UNS S31277 bolts that we could do is as follows:Black Oxide,Brass Plated.Cadmium,Chromate,Chrome,Color Coated,Galvanized,Nickel Plated,Painted,Phosphate,Polished,PTFE,Silver Plated,Teflon,Zinc Plated

In order to control the quality of UNS S31277 bolts, the material of UNS S31277 bars is melted by ESR+VIR or VIM+ESR+VAR and is produced as the standard of ASTM B462 and ASTM B473

UNS S31277  is an advanced 7% molybdenum super-austenitic stainless steel

The chemical composition of S31277 bolts is as follows

Chemical Composition (%)

C max.


Mn   max.


P max.


S max.


Si   max.



20.5 - 23.0


26.0 - 28.0


6.5 - 8.0


0.30 - 0.40


0.50 - 1.50



The mechanical property of UNS S31277 bolts is as follows



Tensile  strength(annealed)

120 ksi

Yield  strength(annealed)

60 ksi

Elongation  at Break( in 2 in 50 mm)


Hardness,  Rockwell B


Hardness,  Vickers (0% cold work)


As per heat treatment of UNS S31277 bolts, we could do, solution and ageing treatment, Tempering, Hardening, Spheroidizing, Stress Relieving as per the requirement of the clients

UNS S31277 bolts has been widely used in heat exchangers,air receivers,pressure vessels,Stripper columns, separators, splitter, columns, hydro treaters, hydro crackers, desalters,shipping building and Aviation,drilling stations, pipelines and refineries,processing units,mechanical equipment, crystalizer equipment,Offshore and onshore industry, such as subsea and deepwater offshore oil production systems, industrial air compressors, power generators and nitrogen generators and so on,

In order to control the quality of UNS S31277 bolts, We could do Chemical & Physical Test,Magnetic Particle Test,Case Depth,Contoureader Tracing,Decarburization/Carburization Report,Hardness Core,Plating Thickness Measurement,Proof Load Test - 400,000 lb. max capacity,Salt Spray Test,Surface Discontinuity Measure,Surface Roughness Test,Tensile Test - 400,000 lb. max capacity as per the requirement of the clients

Our UNS S31277 bolts has been 100% ultrasonic test according to EN102768-3, SA388, Sep 1921  etc

We could supply UNS S31277 bolt material certificate as per the standard of EN10204-3.1 or EN10204-3.2 of third party(like LR,BV,RINA,ABS,DNV,GL,NK,KR and so on)

Please sned us the size or drawing of UNS S31277 bolts, we are glad to quote the best price for your side.

We could accept the drawing of S31277 bolts in following forms:AutoCAD (DWG,DWZ),BMP - Bit Mapped Graphics,Catia (CATDrawing,CATPart),Delcam (DGK, DMT),DXF - Drawing Interchange Format, or Drawing Exchange Format,GIF - Graphics Interchange Format,JPG or JEPG - Joint Photographic Experts Group,MasterCam (MDX, MC8, MC9, SET),PDF - Portable Document Format,Pro-E or Pro/Engineer (DRW,PRT,XPR),AutoCAD (DWG,DWZ),SolidWorks (SLDPRT,SLDDRW,SLDDRT),STEP - Standard for the Exchange of Product Model Data,TIFF - Tagged Image File Format

Except UNS S31277 bolts,we also could produce UNS S31277 flanges,UNS S31277 plates,UNS S31277 fastener,UNS S31277 bars,UNS S31277 fittings,UNS S31277 pipes,UNS S31277 tubes,UNS S31277 springs