Sheet, round, wire ХН40МДБ - ЭП937

International Equivalent

Mark	Analogue	W. Nr.	Aisi Uns	En	Order
ХН40МДБ	EP937				Delivery from the stock, in stock

Alloy HN40MDB-VI (EP937-VI)

Iron-steel HN40MDB-VI is smelted in induction furnaces vacuum. Use a deformable non-magnetic material for welded chemical equipment operating in aggressive oxidizing or reducing environments on production lines synthesis of acetic, formic acid. sulfuric nitric. acid, phosphoric acid and similar acids. Use in sulfuric acid environments, hydrometallurgical plants containing chloride ions and hydrogen sulfide. On alloy HN40MDB-VI has the following specifications: 14−1-2131−77; 14−1-2149−77; 14−1-2121−77.

Chemical composition

Al	C	Ce	Cr	Cu	Fe	Mn	Mo	N	Nb	Ni	Si	Y
≤0,2	≤0,03	Calc. 0.03	20 to 22	1.5 to 2.2	Ost.	0.8 to 1.5	From 5 to 6.5	≤0,03	C · 15−0,8	From 39 to 42	≤0,2	≤0,2

Mechanical properties at 20 ° C

TU	products	Rm N / mm²	σ0,2, N / mm²	δ5,%
According to TU 14−1-2131−77	Hot rolled sheets	490	195	thirty

The mechanical properties at low and elevated temperature (7 mm thick plates, from the hardening process 1060 ° C in water)

tisp, ° C	σ0,2, N / mm²	Rm N / mm²	δ,%	ψ,%	KCU (cont'd) J / cm²	KCU (transverse), J / cm ²
-196	-	-	-	-	290	267
-100	-	-	-	-	330	300
-60	-	-	-	-	340	-
-40	-	-	-	-	335	300
20	275	635	47	69	320	296
150	245	575	43	61	295	266
350	195	540	47	53	315	290
500	185	525	45	41	335	270
600	175	495	58	38	305	247

The mechanical properties at high temperature (sheet thickness of 7 mm, the quenching process 1060 ° C in water)

tisp, ° C	σ0,2, N / mm²	Rm N / mm²	δ5,%	ψ,%	KCU (cont'd) J / cm²	KCU (transverse), J / cm²
700	165	390	47	65	280	220
800	160	255	75	90	240	200
900	125	140	78	90	200	190
1000	65	70	102	90	250	210
1100	35	45	123	90	210	200
1200	20	25	115	90	160	165

Physical properties HN40MDB-VI

Alloy Density 8.26 g / cm³; Melting tº of 1375−1400 ° C; and the magnetic permeability of ≤ 1,007 (mT · m) / A at 20 ° C. The values of the modulus of elasticity (E), temperature coefficient of linear expansion (alpha), thermal conductivity (X), resistivity (ρ).

tisp	E · 10−4 N / mm2	λ, W / (m · K)	p · 106 ohm-m	tisp	α · 106, K-1
20 ° C	21.2	12.1	1.07	From 20 to 100 ° C	12.8
100 ° C	20.4	10.7	1.09	From 20 to 200 ° C	13.8
200 ° C	20	-	1.12	From 20 to 300 ° C	13.4
300 ° C	19.6	12.5	1.15	From 20 to 400 ° C	14.3
400 ° C	18.8	15.2	1.18	From 20 to 500 ° C	14.6
500 ° C	18.5	19.8	1.21	From 20 to 600 ° C	14.8
600 ° C	17.8	21.5	1.23	From 20 to 700 ° C	15.3
700 ° C	16.6	23.2	1.24	From 20 to 800 ° C	15.4
800 ° C	15.9	25	1.25	From 20 to 900 ° C	16
900 ° C	-	-	1.26	-	-
1000 ° C	-	-	1.27	-	-

The corrosion resistance of the alloy

Mark HN40MDB-VI according to TU 14−1-2131−77 is resistant to intergranular corrosion by the method of GOST BY 6 O32−89. Before the test, the sample is heated to 700 ° C (20 minutes). When tested by methods AM, MCA (G0ST 6032−89) alloy exhibits resistance to intergranular corrosion after heating to 550−950 ° C 95 hours, and the slave method GOST 6032−89 after heating for two hours at 800 ° t ° C. The alloy is not prone to stress corrosion cracking in boiling 42% MgCl solutions or 50% H ₂ SO _4. An alloy resistant to localized corrosion and pitting in a solution of FeCl, in production of wet environments H ₃ PO _4, H ₂ SO concentrated _4, a hydrometallurgical production environments.

Treatment

The alloy is easily handled in the hot and cold, as well as a satisfactory cut. Hot deformation is produced in the thermal range of 1180−900 ° C. This alloy argon-arc welded by using filler wire HN40MDB-VI or by manual arc welding with rod electrodes brand Saint-HN40MDB-VI. HN40MDB-VI alloys with HN65MV and 06HN28MDT (EI943) is subjected to a composite welding.

Supply

All submitted articles HN40MDB brand-VI certified. The technical documentation includes data on the chemical composition, limiting the percentage of impurities; mechanical properties of products. We can buy in bulk, any semi-finished products for large-scale productions. We also offer optimal conditions for retail customers. High level of service and efficiency of service are the face of our company.

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Digging LLC «Electrovek-steel» offers an unlimited range of iron-nickel alloys of the highest quality. We offer special purpose alloys for the best price from warehouses in Ukraine and Russia. If you are interested in our offer, please contact the nearest office. The qualified experts will provide all necessary information on the product, the price range, the implementation conditions. The cost of goods depends on the parameters of products and additional conditions of supply.