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Incoloy 800H/HT Studbolts. Incoloy Studbolts DIN 975 / 976, BS 4882, ANSI B16.5

Incoloy 800HT Studbolts & “Studs”


Incoloy 800H/HT Studbolts / Studs Manufacturers and Suppliers – DIN975, DIN976

Manufacturing Range M6 to M100, 1/4″ to 4″ with Varied Lengths
StandardsDIN 975, DIN 976, BS 4882, ANSI B16.5
GradesIncoloy 800, Incoloy 800H, Incoloy 800 HT
EquipmentThread Rolling Machines, CNC Machines
Types of Incoloy Studbolts or StudsFull Threaded Incoloy Studs, Double End Incoloy Studs, Tap End Incoloy Studs, Incoloy Studbolts

Studbolts are also, generally referred to as threaded rods or connectors. Upon your request we can manufacture Incoloy 800H/HT studbolts of the dimensions exactly according to your requirements. These may for example include studbolts according to DIN 976 and other dimensions or tolerances of the thread in various sizes, lengths and from various materials. We are producing the Incoloy studbolts by thread rolling. Rolled threads has main benefits such as the increase of strength by means of cold forming, very good surface roughness values, high dimensional accuracy and many others.

Metline is a full line manufacturer of Incoloy 800H/HT studbolts in accordance with DIN, ASME, ASTM and ISO standards. The most commonly used Incoloy Alloys for manufacturing studbolts or studs are Incoloy 800, Incoloy 800H and Incoloy Alloy 800HT.


Manufacturers & Suppliers of Incoloy Studbolts & Studs – Buy DIN975 DIN976 Incoloy Studbolts or Studs at Best Prices

**Incoloy® is a registered trademark of the Special Metals Corporation group of companies

Metline is a professional manufacturer and supplier of Incoloy 800HT studbolts with nuts and washers. We offer hot forged Incoloy studbolts/studs and nuts up to 2″ Dia, and custom length. Our CNC machined Incoloy studbolts can be offered in sizes upto M100 / 4” Dia in custom lengths.

Incoloy 800,Incoloy 800H , and Incoloy 800HT are nickel-iron-chromium super alloys. When exposed to high-temperature these alloys not only provide excellent resistance to oxidation and carburization but also good strength too. These nickel steel alloys are similar except for the higher level of carbon in Incoloy 800H, and the addition of up to 1.20 percent titanium and aluminum in Incoloy 800HT.

Equivalents & Grades of Incoloy Studbolts, Studs

WERKSTOFF NR.1.48761.4958 / 1.48761.4959 / 1.4876
BSNA 15NA 15(H)NA 15(HT)

Incoloy Alloys Chemical Composition %

NI30.0 – 35.030.0 – 35.030.0 – 35.0
CR19.0 – 23.019.0 – 23.019.0 – 23.0
FE39.5 min39.5 min39.5 min
MN1.5 max1.5 max1.5 max
C0.10 max0.05 – 0.100.06 – 0.10
CU0.75 max0.75 max0.75 max
SI1.0 max1.0 max1.0 max
S0.015 max0.015 max0.015 max
AL0.15 – 0.600.15 – 0.600.15 – 0.60
TI0.15 – 0.600.15 – 0.600.15 – 0.60
* UNS N08811 : Al + Ti = 0.85 – 1.20

Incoloy Alloys Mechanical & Physical Properties

MELTING POINT2475 – 2525 °F/ 1357 – 1385 °C
SPECIFIC HEAT @ 70°F0.11 Btu/lb•°F
PERMEABILITY @ 70°F ANNEALED1.014 (200 Oersted)
ELASTIC MODULUS28.50 X 106 psi
ELECTRICAL RESISTIVITY @ 70°F595 ohm•circ mil/ft
ANNEALLING INCOLOY 800983 – 1038 °C / 1800 – 1900 °F
ANNEALLING INCOLOY 800H / HT1147 – 1177°C / 2100 – 2150 °F
QUENCHRapid Air / Water


Density7.94 g/cm3
Melting Point1385 °C (2525 °F)
Tensile StrengthPsi – 75,000 , MPa – 520
Yield Strength (0.2%Offset)Psi – 30,000 , MPa – 205



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