Sheet, circle, wire N65M - EP982

International Equivalent

Mark	Analogue	W. Nr.	Aisi Uns	En	Order
Н65М	EP982				Delivery from the stock, in stock

Feature

Alloy Н65М-VI Nickel-based belongs to the category of heat-resistant alloys of austenitic class. High quality steel allow to use it in an oxidizing atmosphere at a temperature from -70 to 500 °C, pressure up to 5 N/mm2. Nickel, whose share in the alloy is 65%, protect the surface of structures, from wet corrosion and corrosion cracking in alkaline and oxidizing environments, gives resistance to intergranular corrosion. Supplements silicon, manganese, molybdenum additionally improve manufacturability and performance. The alloy is melted in vacuum induction furnaces. Used in the manufacture of welded chemical equipment for the synthesis of ion-exchange resins, polypropylene, acetic acid.

Chemical composition:

C	Cr	Fe	Mn	Mo	Ni	P	S	Si	W
≤0,02	≤0.3 mm	From 2 to 3	≤0,5	30−32	DOS.	≤0,01	≤0,015	≤0,05	From 0.05 to 0.45

Mechanical properties at t° 20°C

TU	Products	σв, N/mm2	σт, N/mm2	δ, %	>Hardness HB
14−1-2674−79	Bars	686	294	25	-
14−1-2879−80	Hot-rolled sheets	780	365	40	241
14−1-4673−89	Hot-rolled sheets	780	365	40	-
14−1-4719−89	Cold-rolled sheets	833	372	40	-
14−1-4202−87	Tape	830	365	35	-
14−3-1478−87	Pipe welded	830	365	35	-

Mechanical properties in the temperature range 20 — 700 °C (sheet a cross section of 10 mm tempered in water at 1070°C)

tисп, °C	σт, N/mm2	σв, N/mm2	δ5, %	ψ, %
20	420−520	920−1050	50−60	55−62
100	470−480	900−1000	50−58	54−59
200	400−480	870−950	48−55	45−50
300	350−450	820−950	46−50	42−48
400	350−450	620−950	45−50	40−46
500	310−450	760−980	37 to 56	31−44
600	390−440	780−990	40−50	26
700	380−400	660−710	30−34	23−28

Mechanical properties at high temperature (sheet thickness of 10 mm, tempered in water at 1070°C)

tисп, °C	σт, N/mm2	σв, N/mm2	δ, %	ψ, %	KCU, j/cm2
800	310−430	590−630	62−73	69 to 76	-
900	280−380	330−380	84−89	90	190
1000	164−180	180−210	103−106	90	250
1100	88−93	96−110	82−108	63−78	>360
1200	45−70	50−70	85−125	65−87	>280
1250	40−50	40−60	50−60	40−60	260

Mechanical properties at t° 20 °C depend on the degree of cold deformation. Below are details for wire Ø3 mm, the process of quenching in water before the cold deformation at t°1100°C.

The degree of compression,%	σ0,2, N/mm2	σв, N/mm2	δ, %	ψ, %
0	520	980	50	42
5	840	1100	35	37
10	950	1150	27	35
15	1020	1180	25	30
20	1050	1200	20	22

Resistance to corrosion

Alloy brand Н65М-VI is resistant to intergranular corrosion after provoking tempering at 800 °C (30 minutes) and tested in the control of boiling 21% solution of Hcl (200 h)., This alloy unlike N70MFV-VI, has higher contents of molybdenum and greater resistance to corrosion in aggressive environment of reduction, it is recommended for more aggressive environments is N70MFV-VI.

The process parameters and processing

This alloy is available to any types of treatment: forging, rolling, stamping, pressing, drawing. Hot deformation is produced in the thermal interval 1220−950°C with a long preliminary aging at t º heating. The alloy is more prone to the cold deformation, in comparison with austenitic steels of type 18−10, which is why it requires additional intermediate heating under pressure treatment. After the molding products must undergo heat treatment at t° 1070+20°C (exposure 3−5 min/mm cross section), and cooled under a water shower. Cutting of alloy (drilling, turning, milling) carried out at lower speeds using carbide ВК3, ВК3М, ВК6М, and for drilling alloys ВК10 ВК10М, ВК15, ВК15М. Alloy manual arc welded or TIG method. In the latter case, the filler material used wire Н70М-VI (ЭП495) according to TU 14−1-673−82) or Н65М-VI (ЭП982), according to the 14−13 281−81. For arc welding use electrodes OzL-23. Welding should be conducted with intensive cooling. Welded joints have high mechanical strength (σ0,2 = 350 N/mm2, σв 720 N/mm2, δ5 = 35%, KCU = 150 j/cm2), the resistance to intergranular corrosion, including stab types.

Supply

All the products Н65М-VI certified. In the technical documentation included data on chemical composition, limiting the percentage of impurities; mechanical qualities of the products. We can buy in bulk any semi-finished products for large-scale production. We also offer optimal conditions for retail customers. A high level of service and speed of service are the face of our company.

Buy at best price

All Nickel alloys implemented by the company «Electrocentury-steel» meet state quality standards. Supply metal standard and custom sizes in the shortest possible time from warehouses located on the territory of Russia and Ukraine. High quality, affordable prices and a wide range of products define the face of our company. Becoming our regular customer, You will be able to rely on the system of discount discount. Cooperation with us will help You to implement any engineering plans. Waiting for Your orders on the website evek.org.