Nickel-Fe-Cr alloy, INCOLOY 800, cold drawn, bar

INCOLOY 800 Designation (cold drawn, bar)

Unified Numbering System (USA): N08800
Condition	Cold drawn
UNS number	N08800
US name	ASTM Grade N08800; AMS 5766, 5871
EN name	X 10 NiCrAlTi 32 20
EN number	1.4876
ISO name	ISO 9723, 9724, 9725, 6207, 6208

INCOLOY 800 Tradenames (cold drawn, bar)

INCOLOY 800	Special Metals Corp. (USA)
AD NY810	Aubert & Duval (FRANCE)

INCOLOY 800 Typical uses (cold drawn, bar)

Heat treating equipment, petrochemical pyrolysis tubing and piping systems, sheathing for electrical heating elements, food processing equipment

INCOLOY 800 Composition detail (cold drawn, bar)

Al (aluminum)	0	–	1	%
Cr (chromium)	19	–	23	%
Cu (copper)	0	–	0.75	%
Fe (iron)	39.5	–	50	%
Mn (manganese)	0	–	1.5	%
Ni (nickel)	30	–	35	%
Si (silicon)	0	–	1	%
Ti (titanium)	0.15	–	0.6	%
Other	0	–	0.1	%

INCOLOY 800 Physical properties (cold drawn, bar)

Density

7.85

–

8.05

g/cm³

INCOLOY 800 Mechanical properties (cold drawn, bar)

Young’s modulus	190	–	200	GPa
Specific stiffness	23.8	–	25.2	MN.m/kg
Yield strength (elastic limit)	515	–	865	MPa
Tensile strength	690	–	1040	MPa
Specific strength	64.8	–	109	kN.m/kg
Elongation	10	–	30	% strain
Compressive strength	515	–	865	MPa
Flexural modulus	190	–	200	GPa
Flexural strength (modulus of rupture)	515	–	865	MPa
Shear modulus	70	–	76	GPa
Bulk modulus	186	–	224	GPa
Poisson’s ratio	0.33	–	0.35
Shape factor	21
Hardness – Vickers	230	–	280	HV
Hardness – Rockwell B	89	–	107	HRB
Hardness – Rockwell C	8	–	32	HRC
Hardness – Brinell	180	–	300	HB
Elastic stored energy (springs)	717	–	1820	kJ/m³
Fatigue strength at 10^7 cycles	275	–	520	MPa
Fatigue strength model (stress range) Parameters: Stress _{Ratio = -1, Number of Cycles = 1e7cycles}	236	–	606	MPa

INCOLOY 800 Impact & fracture properties (cold drawn, bar)

Fracture toughness	105	–	116	MPa.m^0.5
Toughness (G)	56.1	–	69.3	kJ/m²

INCOLOY 800 Thermal properties (cold drawn, bar)

Melting point	1360	–	1390	°C
Maximum service temperature	777	–	977	°C
Minimum service temperature	-273			°C
Thermal conductivity	11	–	12	W/m.°C
Specific heat capacity	490	–	515	J/kg.°C
Thermal expansion coefficient	13.5	–	15	µstrain/°C
Thermal shock resistance	185	–	313	°C
Thermal distortion resistance	0.755	–	0.864	MW/m
Latent heat of fusion	270	–	300	kJ/kg

INCOLOY 800 Electrical properties (cold drawn, bar)

Electrical resistivity	92	–	100	µohm.cm
Electrical conductivity	1.72	–	1.87	%IACS
Galvanic potential	-0.23	–	-0.15	V

INCOLOY 800 Magnetic properties (cold drawn, bar)

Magnetic type

Non-magnetic

INCOLOY 800 Optical, aesthetic and acoustic properties (cold drawn, bar)

Transparency	Opaque
Acoustic velocity	4880	–	5020	m/s
Mechanical loss coefficient (tan delta)	2e-4	–	5e-4

INCOLOY 800 Processing properties (cold drawn, bar)

Metal casting	Unsuitable
Metal cold forming	Acceptable
Metal hot forming	Acceptable
Metal press forming	Acceptable
Metal deep drawing	Unsuitable
Machining speed	6.4 m/min
Weldability _{Notes: Preheating is not required, post weld heat treatment is required}	Good
Weldability – MIG	Fair
Weldability – plasma	Fair
Weldability – SAW	Fair
Weldability – TIG	Fair
Brazeability	Good

INCOLOY 800 Durability (cold drawn, bar)

Water (fresh)	Excellent
Water (salt)	Excellent
Weak acids	Excellent
Strong acids	Acceptable
Weak alkalis	Excellent
Strong alkalis	Excellent
Organic solvents	Excellent
Oxidation at 500C	Excellent
UV radiation (sunlight)	Excellent
Galling resistance (adhesive wear) _{Notes: Bronze or zinc alloy dies should be used to minimize galling.}	Limited use
Flammability	Non-flammable

INCOLOY 800 Corrosion resistance (cold drawn, bar)

Pitting resistance equivalent number (PREN)	19 – 23
Pitting and crevice corrosion	Medium (20-30)
Stress corrosion cracking Note: Rated in chloride; Other susceptible environments: Hydroxide	Not susceptible
Intergranular (weld line) corrosion	Excellent
Inorganic acids	Excellent
Organic acids	Excellent
Alkalis	Good
Humidity / water	Excellent
Sea water	Moderate
Sour oil and gas	Excellent

INCOLOY 800 Notes (cold drawn, bar)

Warning

All nickel compounds should be regarded as toxic. Some can cause cancer and/or fetal abnormalities.

Other notes

INCOLOY is a registered tradename of the INCO group of companies.

As of September 1999 , INCONEL, INCOLOY, MONEL, NIMONIC, INCO-WELD, NILO, BRIGHTRAY, CORRONEL and UDIMET have become registered trademarks of Special Metals Corporation

Keywords

BS 3072, BS 3075, BS 3076 NA16