13CrMo4-5, 13CrMo4-4, 1.7335, F11

13CrMo4-5, 1.7335, 13CrMo4-4, A182 F11 boiler steel for power engineering in accordance with EN 10273, EN 10222-2, EN 10028-2, and EN 10216-2.

#13CrMo4-5, #13CrMo4-4, #1.7335, #F11,

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13CrMo4-5, 13CrMo4-4, 1.7335, F11 - Introduction and Application

13CrMo4-5 low-alloy steel low-carbon chromium-molybdenum steel, has good cold and hot workability, excellent machinability, weldability, while maintaining high strength performance at room temperature and high temperature. Close to 13CrMo4-5, more common in product form, used as semi-finished products of parts and components in the power industry, and in the chemical industry that work at temperatures up to 530 ℃-contact with liquids containing various concentrations of "hard" substances, which may contain Gases and vapors of a variety of chemical substances-pressure equipment components, boilers, turbines and power systems. The 13CrMo4-5 grade is used to install parts-bottoms, flanges, elbows, tees, profiles, seamless pipes, bars, forgings, flat steels and hot-rolled plates of various thicknesses and sizes. The aforementioned fittings are used for steam and other exhaust pipes, such as pipes and superheater pipes Petroleum, petrochemical, high-pressure boilers, etc., seamless pipes for special purposes include seamless pipes for boilers, seamless steel pipes for geology, and seamless pipes for petroleum.. For hot-rolled, forged and forged materials, these products are used for screws, nuts, pillars, and boiler and steam turbine parts. Flat products-such as plates or strips used as parts of pressure vessels, turbine blades, steam engines or steam collectors. 13CrMo4-4 steel is mainly delivered in heat-treated, softened, normalized and tempered states.

Melted process

Converter, Continuous Casting and Rolling

13CrMo4-5, 13CrMo4-4, 1.7335, F11 - Chemical composition WT %

GradeChemical Composition WT %
C:Mn:Si:P:S:Cr:Mo:Ni:V:Ti:Cu:W:Al:N:
13CrMo4-5, 13CrMo4-4, 1.73350.08 - 0.180.4 - 1.0Max 0.35Max 0.025Max 0.010.70 - 1.150.4 - 0.6


Max 0.30

Max 0.012
13CrMoSi5-5, 1.7336Max 0.170.40 - 0.650.50 - 0.80Max 0.015Max 0.0051.00 - 1.500.45 - 0.65Max 0.3

Max 0.3

Max 0.012
15CD4.05, 15CD4, 15 CD 4.05Max 0.180.4 - 0.80.15 - 0.35Max 0.035Max 0.0350.8 - 1.20.4 - 0.6Max 0.3





15ChM, 15KhM, 15ХМ0.11 - 0.180.40 - 0.700.17 - 0.37Max 0.035Max 0.0350.80 - 1.100.40 - 0.55Max 0.3Max 0.05Max 0.03Max 0.3Max 0.2
Max 0.2
A182 Grade F11, UNS K115720.1 - 0.20.3 - 0.80.5 - 1.0Max 0.040Max 0.0401.0 - 1.50.44 - 0.65






A182 Grade F12, UNS K115620.05 - 0.150.3 - 0.61Max 0.5Max 0.045Max 0.0450.8 - 1.250.44 - 0.65






UNS K12062Max 0.200.3 - 0.8Max 0.6Max 0.045Max 0.0450.80 - 1.250.44 - 0.65






Mechanical Property of 13CrMo4-5, 13CrMo4-4, 1.7335, F11

  • Tensile strength Rm
    • Dimensions: Max 16 - 60mm = 450 - 600 N/mm2
    • Dimensions: 60 - 100mm = 440 - 590 N/mm2
    • Dimensions: 100 - 150mm = 430 - 580 N/mm2
  • Yield point Rp0.2
    • Dimensions: Max 16mm = Min  300 N/mm2
    • Dimensions: 16 - 60mm = Min  295 N/mm2
    • Dimensions: 60 - 100mm = 275 N/mm2
    • Dimensions 100 - 150mm = Min  255 N/mm2
  • Notch toughness at room temperature KV
    • Dimensions: 16 - 60mm = Min  31 J
    • Dimensions: 60 - 150mm = Min  27 J
  • Elongation A
    • Dimensions: 16 - 60mm = Min  20 %
    • Dimensions: 60 - 150mm = Min  19 %

Heat Treatment of 13CrMo4-5, 13CrMo4-4, 1.7335, F11

Heat treatment is an extremely effective measure to improve and modify the performance of 13CrMo4-4 alloy round steel, and it plays a very important role in the reliability and economy of the product. The heat treatment of 13CrMo4-5 alloy round steel usually includes ordinary heat treatment (annealing, normalizing, quenching, tempering) and surface heat treatment (surface quenching and chemical heat treatment—carburizing, nitriding, metalizing, etc.).

  • Softening annealing at the temperature of 600 - 700℃
  • Normalizing with cooling in calm air at the temperature of 910 - 940℃
  • Relief annealing with calm air cooling at the temperatures of 660 - 710℃
  • Hardening with cooling in water at the temperature of 890 - 910 ℃, when cooling in oil - 900 - 930 ℃
  • Tempering in calm air at temperatures of 650 - 720 °C

Welding of 13CrMo4-5, 13CrMo4-4, 1.7335, F11

Plan I: Welding preheating, using ER80S-B2L welding wire, TIG welding bottoming, E8018-B2 welding rod, welding rod arc welding cover, and local heat treatment after welding.

Scheme II: Use ER80S-B2L welding wire, TIG welding for bottoming, E309Mo-16 welding rod, and welding rod to fill the arc welding cover, without heat treatment after welding.


Equivalent grades of 13CrMo4-5, 13CrMo4-4, 1.7335, F11

13CrMo4-5, 13CrMo4.5, 1.7335, 7335, 13CrMo45, 15KhM, 13CrMo4-4, 14CrMo4-5, 13CrMo4.4, 14 CrMo 4-5, 13 CrMo 4-5, 15ChM, 15ХМ, 12ChM, 12KhM, 13CrMoSi5-5, 13 CrMoSi 5-5, 1.7336, 12ХМ, 12CrMo, 15CrMo, 12CrMoG, 15CrMoG, CSN 15121, G17CrMo5-5, 15CD4.05, 15 CD 4.05, BS 620, BS 621, KL 9, Cr5Mo45.47, 12Cr4Mo5H, 15Cr90Mo55, IASC7335, 14CrMo3, SFVA F 12, NV 1 Cr 0.5 Mo, SFVA F12, 14CrMo4, SS 2216, Grade F12, Grade F11, Grade T11, Grade T12, Grade P11, Grade P12, K11562, K11564, K11572, K11597, K12062, K12122, K12822.

13CrMo4-5, 13CrMo4-4, 1.7335, F11 Boiler steel stock list

Grade Shape Dimensionmm Qty.kg
13CrMo4-4 plate 3*1500*C 21000
13CrMo4-4 plate 4*1500*C 19650
13CrMo4-4 plate 5*1500*C 21598
13CrMo4-4 plate 6*1500*C 35685
13CrMo4-4 plate 8*1500*C 29856
13CrMo4-4 plate 10*1500*C 12350
13CrMo4-4 plate 12*1500*C 21025
13CrMo4-4 plate 14*1500*C 36985
13CrMo4-4 plate 16*1500*C 49854
13CrMo4-4 plate 18*1500*C 19685
13CrMo4-4 plate 20*1500*C 52125
13CrMo4-4 plate 22*1500*C 23650
13CrMo4-4 plate 25*1500*C 25874
13CrMo4-4 plate 28*1500*C 36985
13CrMo4-4 plate 30*1500*C 16985
13CrMo4-4 plate 32*1500*C 29865
13CrMo4-4 plate 36*1500*C 19656
13CrMo4-4 plate 40*1500*C 69521
13CrMo4-4 plate 48*1500*C 29658
13CrMo4-4 plate 50*1500*C 29865
13CrMo4-4 plate 55*1500*C 69856
13CrMo4-4 plate 60*1500*C 54255
13CrMo4-4 plate 65*1500*C 36985
13CrMo4-4 plate 80*1500*C 19854

Steel grade

Category

Special steel

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