What Monel 400 fasteners do you stock?

TorqBolt stocks the full nickel-copper bolting set in Mumbai - hex bolts, heavy hex bolts, socket cap screws, stud bolts, hex nuts, heavy hex nuts, lock nuts, plain and spring washers, threaded rod, anchor and foundation bolts. Bolts to ASTM F468 Class A or B; nuts to ASTM F467 Class A or B; bar input per ASTM B164; specials forged from ASTM B564 stock.

What size range of Monel 400 fasteners is available?

Imperial 1/4 in. through 1-1/2 in. ex stock, 1-3/4 in. and 2 in. on indent from B564 forging billet. Metric M6 through M40 standard, M48 through M64 on indent. Threaded rod in 1 m / 3 m and 3 ft / 6 ft / 12 ft mill lengths. Studs from 1.5 in. to 36 in. length, longer on indent. Threading per ASME B1.1 UNC, UNF or ISO metric coarse / fine.

Are Monel 400 fasteners NACE MR0175 certified for sour service?

Yes. ASTM F468 caps hardness at 25 HRC across all classes and diameters, tighter than the NACE MR0175 35 HRC sour-service ceiling for nickel-copper. The bolting clears the hardness gate by design. Sour-service shipments carry EN 10204 type 3.2 with the NACE MR0175 / ISO 15156-3 compliance statement on the MTC.

Why are Monel 400 fasteners priced higher than stainless steel?

Monel 400 carries 63 to 70 percent nickel and 28 to 34 percent copper against 10 to 14 percent nickel in SS 316L, so raw-material input cost runs 4 to 6 times higher per kilogram, with smaller bolting heats adding conversion cost. The premium pays back in HF acid, sour gas and marine duty where stainless and copper alloys fail in service.

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Hub fixations Monel 400 (UNS N04400)

Fixations Monel 400 (UNS N04400) — vis, écrous, goujons, rondelles et boulons d'ancrage en matériau UNS N04400 nickel-cuivre. Excellente résistance à la corrosion en HF, eau de mer et acides réducteurs.

Composition chimique

Élément	Plage (% en poids)
Nickel (Ni)	63 min
Copper (Cu)	28 - 34
Iron (Fe)	2.5 max
Manganese (Mn)	2.0 max
Silicon (Si)	0.50 max
Carbon (C)	0.30 max

Propriétés mécaniques

Propriété	Valeur (min)
Tensile / Zugfestigkeit / Carico rottura / Résistance traction	70 ksi / 485 MPa
0.2% yield	28 ksi / 195 MPa
Elongation	35%
Hardness HRB	60-80

Applications

Installations alkylation HF
Récipients pression eau de mer
Cuves acides réducteurs
Applications structurelles marines
Brides pompes eau saumâtre

Normes

ASTM F468
ASTM B164
ASTM A194 (nuts)
ASTM F436 (washers)

Questions fréquentes

Devis en 24h avec certification EN 10204 3.1 ou 3.2.

Email: info@torqbolt.com / WhatsApp: +91-22-66157017

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Hub fixations Monel 400 (UNS N04400)

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