Sheet, round, wire KHN58V - ЭП795

International Equivalent

Mark	Analogue	W. Nr.	Aisi Uns	En	Order
03ХН58В	EP795				Delivery from the stock, in stock
хн58в	EP795				Delivery from the stock, in stock

Alloy ХН58 (ЭП795)

Steel Nickel-based ХН58 is smelted IN an open induction method. Used in the manufacture of welded equipment operating in solutions of HNO3, i.e. in the presence of fluorine ions, for example, in hydrofluoric-nitric acid pickling solutions. Used in the manufacture of welded pickling baths. For steel ХН58 provided IN the next TU: 14−131−224−75; 14−1-2715−79; 14−1-4362−87; 14−1-4363−87; 14−131−756−88; GOST 5632−72.

Chemical composition

C	Cr	Fe	Mn	Ni	P	S	Si	W
From 39 to 41	≤0,8	≤1	DOS.	≤0,015	≤0,012	≤0,15	From 0.5 to 1.5	≤0,03

Mechanical properties KHN58V

Mechanical properties for sheet thickness of 3 mm, quenching at 1070 °C in water

tисп, °C	σт, N/mm2	σв, N/mm2	>δ5%	ψ, %
20	400−590	850−980	40−50	47−50
100	400−550	850−950	40−50	45−50
200	400−500	850−940	40−50	45−50
300	400−480	800−910	40−45	42−47
400	400−480	800−850	40−42	35−39
500	400−460	800−830	35−37	33−35
600	400−460	790−800	35−37	30−35

Mechanical properties at high temperature (rod size 90 mm, the process of quenching from 1100 °C in water)

tисп, °C	σт, N/mm2	σв, N/mm2	δ, %	ψ, %	KCU, j/cm2
900	140−180	160−240	45−80	50−90	120−290
950	100−110	120−150	45−84	50−85	240−310
1000	80−100	100−110	43−75	50−70	250−300
1100	40−50	60−80	70−100	55−70	300−320
1200	20−30	30−40	70−90	55−80	280−300
1250	32	35	95	80	230

Physical properties at 20°C

Alloy density 8.1 g/cm3; elastic modulus of 22.4 · 10−4 N/mm2; specific resistivity of 1.18 Ohm·mm2/m, and specific heat equal to 375 j/(kg · K) thermal conductivity at 100 °C = 0,126 · 102 W/(m · K).

Values of temperature coefficient of linear expansion α

10	α · 106, K-1
From 20 to 100°C	10,4
From 20 to 200°C	10,8
>From 20 to 300°C	10,95
From 20 to 400°C	For 11.55
From 20 to 500°C	11,9
From 20 to 600°C	12,3
From 20 to 700°C	12,85
From 20 to 800°C	12,89
From 20 to 900°C	13

Resistance to corrosion

THAT 14−131−224−75, 14−1-4362−87, 14−1-4363−87 GOST 3239−81 normalized resistance to intergranular corrosion after provoking tempering at t° 700 °C (half-hour), air-cooled, and after the test method do GOST 6032−89. Welded joints are resistant to intergranular corrosion in the etching solution of 16−18% HNO3 + 4% HF at a temperature of 50−60°C. After quenching the alloy corrosion rate in boiling 10−58% HNO3 no more than 0, 2 mm for 10 years.

Speed to corrosion

Corrosive environment	KHN58V	18CR10NITI	νкор, mm/year
Etching solution (16−18% HNO3 + 4% HF)	50−60°C	0,14	>1
14 M HNO3 + of 0.05-m solution of HF	94 °C	0,36	>1
14 M HNO3 + 0,1 M HF solution	94 °C	0,59	>1
40−45% HNO3 WITH A 0.2−0.9% HF + 0,2−1% HC1	105 °C	0,2	4−13

Treatment

The alloy is subjected to cold and hot deformation, almost all methods of forming. The temperature interval of hot deformation is 1200−950°C. Heat treatment of metal is heated to t° 1070−1100°C (delay of 3−5 min/mm of maximum cross-section) and cooling rapidly in air or in water.

Welding

This alloy is welded by manual argon-arc welding and electric arc (more than preferably the latter). During TIG welding as an additive an alloy of the basic composition, i.e. ХН58 IN the form of wire. The arc welding is done with electrodes FKH-26 and FKH-13. The welding is performed in the regime of low linear energy (0,6−1,5 kJ/mm). Welded connections are prone to cold and hot cracks, are resistant to intergranular corrosion in fluoride-nitric solutions.

Supply

All the products IN ХН58 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

In stock company «Electrocentury-steel» in the presence of a wide range of Nickel-chromium alloys for the best price. It is based bets on European non-ferrous metals without incorporating extra cost. Certificate of quality products includes data on the chemical composition, limiting the percentage of impurities; mechanical qualities. Cooperation with us gives a number of advantages. Our experts will be happy to provide advice when buying precision alloys, the correct choice of which will depend on the performance and durability of equipment. We will help to determine not only the optimal parameters of the product, but also offer the best price.