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Steel 38KH2N3M

VSt6ps VSt5sp VSt3kp VSt4kp VSt6sp VSt2kp Vst4ps St0 VSt2ps VSt3ps VSt5ps VSt2sp VSt3sp 18К 08ps 10ps 15К 18kp 20ps 35 55 05kp 08Ю 15kp 20 (20А) 22К 40 58 (55ПП) 08 10 (Art. 10) 12К 15pc 20К 25 45 60 08kp 10kp 15 16К 20kp 30 50 0cB 60С2 60C2XA 50XFA 60C2A 60C2CHFA 65C2VA 85 55XGR 65 70C3A 55С2 60Г 60C2H2A 65Г 70 75 SHKH15 SHKH15SG SH4 А12 А20 A40G А30 10XNDP 14G2AF 15G2AFDps 17GS 18G2AFps 09Г2 10G2BD 10ХСНД 12GS 15G2SFD 16GS 35GS 14CGS 15ХСНД 20ХГ2Ц 09G2S 10G2S1 14Г2 16G2AF 17G1S 25G2S 10Г2 14X2GMR 15KHF 18CR2N4MA 20Г 20X2H4A 20XGR 20KHN2M (20KHNM) 30Г 30CGS 30CRNI2MA 34CRNI3M 35Х 38CR2N3M 38XA 38CMA 3CR3M3F 40Х 40XFA 45CRN 50Г2 12XH2 15Х 20KHGSA 20XHN3A 25CGSA 30KHGSA 30CRNI2MOVA 33HS 35KHN1M2FA 38CR2NM 40Г 40CR2H2MA 40CRN 45Г 45CRNI2MOVA 50Х 12XH2A 18CGT 20CRNR 20CRNI4FA 25CGT 30Х 30CGSN2A 30KHN3A 34CRNI1M 35Г 36CR2NI2MOVA 38KH2NMF 38CRN 38CRNI3MA 40Г2 40CRNI2MA 45Г2 47GT 50XH 12CR2N4A 12XHN3A 15Г 18CR2N4VA 20Х 20XH 20XNR 30CGT 30ХН3М2ФА 35Г2 35CGSA 38CR2H2MA 38CRNI3MOVA 40HS 45Х 50Г

Description

Steel 38KH2N3M

Steel 38Х2Н3М: brand of steels and alloys. Below is the systematized information on the purpose, chemical composition, types of supplies, substitutes, temperature of critical points, physical, mechanical, technological and casting properties for the brand — Steel 38X2H3M.

General information about steel 38Х2Н3М

Application
Responsible container parts with high mechanical requirements properties at elevated temperatures.

Chemical composition of steel 38Х2Н3М

Chemical element %
Silicon (Si) 0.17−0.37
Manganese (Mn) 0.50−0.80
Molybdenum (Mo) 0.30−0.40
Nickel (Ni) 2.75−3.25
Sulfur (S), no more 0.035
Carbon (C) 0.35−0.42
Phosphorus (P), no more 0.030
Chromium (Cr) 1.00−1.50

Mechanical properties of steel 38Х2Н3М

Mechanical properties of forgings

Heat treatment, delivery condition Section, mm σ 0.2, MPa σ B, MPa δ 5 ,% ψ,% KCU, J / m 2 HB
Hardening 850−870 ° С, oil. Vacation 560−620 ° С, cooling with oven
KP 900 101−300 900 1000 12 35 60 302−340
KP 800 301−500 800 950 eleven thirty 50 263−331
KP 750 501−800 750 900 eleven thirty 40 277−321
  801−1300           241−321
Normalization 850−870 ° С, air. Vacation 560−620 ° С, cooling with oven
KP 750 301−500 750 900 eleven thirty 40 277−321
KP 700 501−800 700 850 ten thirty 40 262−311
  801−1300           229−302

Mechanical properties versus test temperature

test t, ° C σ 0.2, MPa σ B, MPa δ 5 ,% HB
Forgings up to 600 mm. Normalization 850−870 ° С, air. Vacation 500−550 ° С, cooling with oven
20 800 900 eleven 269−321
450 650 800 eleven  
Forgings up to 600 mm. Hardening 850−870 ° С, oil. Vacation 510−540 ° С, oven cooling.
20 1000 1100 eleven 321−388
450 750 850 12  
500 700 800 12  
Forgings up to 600 mm. Hardening 850−870 ° С, oil. Vacation 550−580 ° C, oven cooling.
20 800 900 12 269−321
450 700 800 12  
500 650 750 12  

Technological properties of steel 38Х2Н3М

Forging temperature
The beginning is 1200, the end is 850.
Weldability
difficult to weld
Tendency to release ability
not inclined
Flock sensitivity
very sensitive

Hardenability of steel 38Х2Н3М

Distance from the end, mm / HRC e
 
 
Amount of martensite,% Crit. Diam. in water, mm Crit. Diam. in oil, mm Crete. hardness, HRCэ Dist. from the cooled end
100 230   51.5 80
100% bainite   1000 48.5 200

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