Sheet, round, wire KhN58V - EP795

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
03ХН58В EP795 Delivery from the stock, in stock
xn58v EP795 Delivery from the stock, in stock

Alloy KhN58 B (EP795)

Nickel-based steel KhN58 B is melted by open induction method. It is used in the manufacture of welding equipment that operates in HNO3 solutions, including in the presence of fluorine ions, for example, in melting and nitric acid pickling solutions. It is used in the manufacture of welded pickling baths. The following specifications are provided for steel CHN58 B: 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
39 to 41 ≤0,8 ≤1 Osn. ≤0,015 ≤0,012 ≤0,15 From 0.5 to 1.5 ≤0,03

Mechanical properties of CrN58V

Mechanical properties for 3 mm thick sheet, quenched at 1070 °C in water

tisp, °C σt, N/mm² σc, 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 (90 mm bars, hardening process with 1100 °C in water)

tisp, °C σt, N/mm² σc, 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

The alloy has a density of 8.1 g/cm3, a modulus of elasticity of 22.4 — 10−4 N/mm2, a specific electrical resistance of 1.18 Ohm-mm2/m, a specific heat capacity of 375 J/(kg — K), a thermal conductivity at 100 °C = 0.126 — 10² W/(m — K).

The values of the thermal coefficient of linear expansion α

10 α — 106, K-1
20 °C to 100°C 10,4
From 20 to 200°C 10,8
>20 to 300°C 10,95
20 to 400°C 11,55
20 to 500°C 11,9
20 to 600°C 12,3
20 to 700°C 12,85
20 to 800°C 12,89
20 to 900°C 13

Corrosion resistance

TU 14−131−224−75, 14−1-4362−87, 14−1-4363−87 GOST 3239−81 standardize resistance to intergranular corrosion after provoking tempering at t ° 700 °C (half an hour) with air cooling, and also after testing by DU method GOST 6032−89. Welded joints have resistance to intergranular corrosion in the pickling solution of 16−18% HNO3 + 4% HF at t° 50−60°C. After quenching the alloy corrosion rate in boiling 10−58% HNO3 no more than 0, 2 mm in 10 years.

Rate to corrosion

Corrosive medium CRN58B CR18NI10T νcor, mm/year
Pickling solution (16−18% HNO3 + 4% HF) 50−60°С 0,14 >1
14 M HNO3 solution + 0,05 M HF solution 94 °С 0,36 >1
14 M HNO3 solution + 0.1-M HF solution 94 °С 0,59 >1
40−45% HNO3 + 0.2−0.9% HF + 0.2−1% NS1 105 °С 0,2 4−13

Processing

The alloy is subjected to cold and hot deformation by almost all methods of forming. The temperature range of hot deformation is 1200−950°C. Heat treatment consists of heating the metal to 1070−1100°C (3−5 minutes/mm maximum cross-section) and cooling it rapidly in air or water.

Welding

This alloy is welded by manual argon arc welding and electric arc welding (the latter is preferable). During argon arc welding an additive is used as a basic alloy, that is, CrN58 B in the form of wire. Arc welding is carried out with FX-26 and FX-13 electrodes. Welding is carried out in a mode of low linear energy (0.6−1.5 kJ/μm). Welded joints are not prone to formation of cold and hot cracks, are resistant to intergranular corrosion in fluoride-nitrogen solutions.

Delivery

All presented products of ХН58 В grade are certified. The technical documentation includes data on the chemical composition, the limiting percentage of impurities, the mechanical properties of products. From us you can buy in bulk any semi-finished products for large-scale production. We also offer optimum conditions for retail buyers. The high level of service and responsiveness of service is the face of our company.

Buy at the best price

Evek GmbH stocks a wide range of nickel-chrome alloys at the best price. It is formed taking into account the European rates for base metals without including additional costs. The certificate of quality includes data on chemical composition, maximum percentage of impurities and mechanical properties. Cooperation with us provides a number of advantages. Our specialists will be happy to advise you on the purchase of precision alloys, the correct choice of which will depend on the performance and durability of the equipment. We will help to determine not only the optimal parameters of the product, but also offer the best price.