By visiting this site, you accept the use of cookies. More about our cookie policy.

45XHNM steel

R6M5K5 Р18 R9M4K8 Р9 45CRNIM 60XH 75CSMF 9Х2 55Х 60CSMF 7X2CMF 9X2MF 60CR2SMF 75CRM 90XMF 60XG 75CRMOV 90XF CB4F 9XVG. CVG 9HS 9Х1 У10 У12 У7 U10A U12A U7A У8 U8A U9A У9 27Х2Н2М1Ф 4X5MFS 6XV2C 7XG2VMF Х12 X12MF 40X5MF 4XV2C 5CHEV2C 6CVG X12VM X12F1 3CR2V8F 4CMFS 5CGM 6HS 8Х3 X6VF. 3Х2Н2МВФ 4Х2НМФ 4X5MF1S 5CRNIM 7Х3

45KhNM steel

Steel 45KHNM: Handbook of steels and alloys. Below is systematized information on the purpose, chemical composition, types of supply, substitutes, critical point temperature, physical, mechanical, technological and foundry properties for the brand — Steel 45KhNM.

General information on 45XHNM steel

The substitute for the brand
steel 40KhN2MA.
Delivery type
forgings GOST 8479−70. Rolls OST 24.013.04−83.
Application
Axes of composite support rolls of sheet metal hot rolling mills, gear shafts and others.

Chemical composition of steel 45KhNM

Chemical element %
Silicon (Si) 0.17−0.37
Manganese (Mn) 0.50−0.80
Molybdenum (Mo) 0.10−0.30
Nickel (Ni) 1.20−1.60
Sulfur (S), max. 0.040
Carbon (C) 0.40−0.50
Phosphorus (P), not more than 0.040
Chromium (Cr) 1.30−1.70

Mechanical properties of 45XHNM steel

Mechanical properties of forgings

Heat treatment, delivery condition Section, mm σ0, 2, MPa σB, MPa δ5, % ψ, % KCU, J/m2 HB
Normalization
KP 440 100−300 440 635 14 40 54 197−235
Hardening. Tempering.
KP 440 300−500 440 635 13 35 49 197−235
Normalization
KP 440 500−800 440 635 11 30 39 197−235
CP 490 100−300 490 655 13 40 54 212−248
Hardening. Tempering.
KP 490 300−500 490 655 12 35 49 212−248
KP 540 500−800 540 685 10 30 39 223−262
CP 590 100−300 590 735 13 40 49 235−277
CP 590 300−500 590 735 12 35 44 235−277
CP 590 500−800 590 735 10 30 39 235−277
KP 685 300−500 685 835 11 33 39 262−311

Mechanical properties of forgings depending on the cross-section

Heat treatment, delivery condition Section, mm σ0, 2, MPa σB, MPa δ5, % ψ, % KCU, J/m2 HB
Normalization 860 °C, air. Tempering at 600 °C, furnace.
The place of cutting out the samples — K 200 900−970 1010−1100 6−14 12−47 31−39 302−321
Sample cutout location — ½R 200 950 1050 12 35 5−31 302
Sample cutout location — C 200 920 1040 6 10 3−17 302−341
Hardening 840−870°C, oil. Tempering 580−650°C, furnace.
Sample cutout location — 1/3R 801−1200 490 640 12 28 29 187−241

Technological properties of 45XHNM steel

Forging temperature
The beginning 1200, the end 800.
Weldability
Not applicable for welded structures.
Workability by cutting
In the quenched and tempered condition at HB 97−269 and σB = 690 MPa K υ tov.spl. = 0.9, Kυ b.st. = 0.7.
Tendency to tempering capacity
Slightly inclined
Floc-sensitivity
highly sensitive

Temperature of 45CrNiM steel critical points

Critical point °С
Ac1 750
Ac3 780

Hardenability of steel 45KhNM

Quenched at 900 °C.

Distance from end face, mm / HRCe
1 2 3 6 9 12 15 18
39,5 40 40 40,5 40,5 40,5 40 39,5