Incoloy 800H Round Bar | UNS N08810 | DIN 1.4958

1.4958 Round Bar Manufacturer, JIS Ncf 800H Round Bar Distributor, Incoloy 800H Round Bar Supplier, UNS N08810 Round Bar Stockist, EN X5Nicralti31-20 Round Bar Exporter.

PM Industries manufactures, supplies, and stocks Incoloy 800H Round Bar (UNS N08810). It's a nickel-iron-chromium alloy and a controlled-chemistry version of the base Incoloy 800 grade. The key difference is carbon content, held to 0.05–0.10% in 800H, combined with a grain size requirement, both of which directly improve creep and stress rupture strength at temperatures above 600°C. For high-temperature applications where components carry load continuously over long service periods, that improvement over base 800 is significant.

ASTM B166 Incoloy 800H Round Bar, Incoloy 800H Round Bar, 1.4958 Round Bar, UNS N08810 Round Bar.

800H and 800HT are closely related. Both use controlled carbon for creep performance. 800HT adds a minimum aluminum plus titanium requirement that further supports grain coarsening and maximizes creep rupture life in the most demanding long-term service above 760°C. For applications below that threshold, or where dual certification is acceptable, 800H is widely used and well proven.

Creep resistance is what distinguishes 800H from base 800 in elevated temperature service. Over thousands of operating hours at temperature under sustained mechanical load, uncontrolled alloys accumulate creep strain faster, shortening the service life of reformer tubes, heat exchanger bundles, and furnace structural components. The controlled carbon and grain size in 800H extend creep rupture life meaningfully in that service range, which is why it displaced base 800 as the standard specification in many high-temperature process industries.

Oxidation resistance is consistent and reliable across the alloy's operating range. The chromium content forms a stable protective oxide in air and combustion environments. That oxide limits further surface attack and adheres reasonably well through thermal cycling, keeping surface condition acceptable over long service intervals in furnace and process heater applications.

Carburization resistance is adequate for moderate carbon activity environments. Reformer tubes, ethylene cracker components, and heat treatment fixtures in carburizing atmospheres are common applications where 800H provides satisfactory service life. For very high carbon activity at the extreme upper temperature range, Alloy 601 or Haynes 230 offer better protection, but for the broad range of petrochemical and heat treatment applications, 800H remains the standard.

Fabrication is practical. The alloy welds using standard nickel alloy procedures, machines acceptably in the annealed condition, and forms without difficulty. Post-weld heat treatment is not required in most applications, which keeps fabricated assembly work straightforward.

Bar is available in a range of diameters and surface finishes with full material certification to ASTM B408 and applicable specifications. Dual-certified 800H/800HT material is available where project specifications allow. Contact PM Industries for stock availability, dimensions, and pricing.

Specification Incoloy 800H Round Bar

Specification	ASTM, EN, DIN, JIS, BS, ASME, AISI
Condition	Hardened & tempered, annealed
Length	1 to 6 Meters, Custom Cut Lengths
Round Bars	Outside Diameter in the range of 4mm to 500mm above as per the customer requirement.
Bright Bars	Outside Diameter in the range of 4mm to 500mm above as per the customer requirement.
Hex Bars	18mm – 57mm (11/16″ to 2-3/4″) above as per the requirement.
Square Bars	18mm – 47mm (11/16″ to 1-3/4″) above as per the requirement.
Flat Bars	1/2” to 10” in thickness range of 2mm to 150mm
Finish	Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Technique	Hot Rolled, Cold Rolled, Cold Drawn, Forged Round Bar, Rod
Tolerance	H8, H9, H10, H11, H12, H13, K9, K10, K11, K12 or as per clients’ requirements
Test Certificates	EN 10204/3.1B, NACE MR0103, NACE MR0175
Raw Materials Certificate	100% Radiography Test Report
Inspection	Third Party Inspection Report, etc

Available Types

Equivalent Grade of Incoloy 800H round bar

STANDARD	UNS	WERKSTOFF NR.	OR	AFNOR	GOST	BS	JIS	EN
Incoloy 800H	N08810	1.4958 / 1.4876	XH32T	Z8NC33-21	ЭИ670	NA 15(H)	NCF 800H	X5NiCrAlTi31-20

Chemical Composition of Incoloy 800H

Grade	C	Mn	Si	S	Cu	Fe	Ni	Cr	Al	Ti
800H	0.05 – 0.10	1.50 max	1.00 max	0.015 max	0.75 max	39.50 min	30.00 – 35.00	19.00 – 23.00	0.15 – 0.60	0.15 – 0.60

Incoloy Alloy 800H Rods Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
7.94 g/cm3	1385 °C (2525 °F)	Psi – 75,000 , MPa – 520	Psi – 30,000 , MPa – 205	30 %

Size Chart of alloy 800H Round Bar

US Bar		Metric		Japanese		Canadian/ASTM
Diameter (Inch)	Size of Bar	Diameter (milimeter)	size of Bar	Diameter (milimeter)	size of Bar	Diameter (milimeter2)	size of Bar
0.375	#3	5.5	5.5	10	10	200	15M
0.25	#2	5	5	6	6	100	10M
0.625	#5	7	7	16	16	500	25M
0.5	#4	6	6	13	13	300	20M
0.875	#7	9	9	22	22	1000	35M
0.75	#6	8	8	19	19	700	30M
1.125	#9	11	11	29	29	2500	55M
1	#8	10	10	25	25	1500	45M
1.375	#11	14	14	35	35
1.25	#10	12	12	32	32
1.625	#13	18	18	41	41
1.5	#12	16	16	38	38
1.875	#15	22	22	48	48
1.75	#14	20	20	44	44
2.25	#18	28	28	57	57
2	#16	25	25	51	51
36	36
32	32
44	44
40	40
50	50

Available Stock of Incoloy 800H Round Ba

Incoloy 800H Annealed Round Bar	Afnor Z8Nc33-21 Shafting Round Bar
1.4958 Normalized Round Bar	EN X5Nicralti31-20 Automotive Round Bar
UNS N08810 Quenched & Tempered Round Bar	ASTM B166 Incoloy 800H Aerospace Round Bar
JIS Ncf 800H Solution Annealed Round Bar	Incoloy 800H Oil & Gas Round Bar
BS Na 15(H) Hardened Round Bar	1.4958 Marine Round Bar
Gost Эи670 Bright Round Bar	UNS N08810 Medical Grade Round Bar
Afnor Z8Nc33-21 Polished Round Bar	JIS Ncf 800H Hot Rolled Round Bar
EN X5Nicralti31-20 Mirror Finish Round Bar	BS Na 15(H) Cold Drawn Round Bar
ASTM B166 Incoloy 800H Pickled & Passivated Round Bar	Gost Эи670 Cold Rolled Round Bar
Incoloy 800H Coated / Plated Round Bar	Afnor Z8Nc33-21 Forged Round Bar
1.4958 Commercial Round Bar	EN X5Nicralti31-20 Peeled Round Bar
UNS N08810 Precision Round Bar	ASTM B166 Incoloy 800H Turned Round Bar
JIS Ncf 800H Straight Length Round Bar	Incoloy 800H Ground Round Bar
BS Na 15(H) Cut-to-Length Round Bar	1.4958 Centreless Ground Round Bar
Gost Эи670 Structural Round Bar	UNS N08810 Precision Ground Round Bar