Steel 45ХГМА

Designation

Name The value
Designation GOST Cyrillic 45ХГМА
Designation GOST Latin 45XGMA
Transliteration 45HGMA
By chemical elements 45CrMnMo

Description

45ХГМА steel is used: for the manufacture of thick-walled and heavy weight drill pipes; drill rods.

Note

Structural steel high-quality chromatorgraphy.

Standards

Name Code Standards
Bars and shapes В32 TU 14-1-5425-2001, TU 26-12-802-90, TU 14-1-5488-2004
Machines and equipment for oil, petrochemical and gas industry Г43 TU 26-12-775-90

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu Al Mo
TU 14-1-5425-2001 0.42-0.49 ≤0.03 ≤0.02 0.9-1.2 1-1.3 0.15-0.35 ≤0.25 Rest ≤0.25 ≤0.03 0.25-0.35
TU 26-12-802-90 0.42-0.49 ≤0.025 ≤0.025 0.65-1.1 0.75-1.2 0.15-0.35 ≤0.5 Rest ≤0.25 ≤0.025 0.15-0.3
Fe is the basis.
According to TU 14-1-5425-2001, the chemical composition is given for direct reduction steel grade 45ХГМА-ПВ.
According to TU 26-12-802-90 the chemical composition is given for the direct reduction steel 45ХГМА. The steel can be treated with silicocalcium in an amount up to 2 kg / t. When observing the norms of mechanical properties, deviations in chemical composition are allowed: for carbon ± 0.010%, for silicon ± 0.020%, for chromium ± 0.020% for chromium contents up to 1.0% and ± 0.050% for chromium content 1.0% for manganese ± 0.020% for manganese content up to 1.0% and ± 0.050% for manganese content of 1.0% or more, for molybdenum ± 0.020% for nickel, and for 0.050% for nickel.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % KCU, kJ/m2 HB, MPa
Weighted tubes in the delivery condition on the other 26-12-775-90 (samples; in cross-section is specified outside diameter of pipe)
≤171 ≥759 ≥966 ≥13 ≥600 285-341
171 ≥690 ≥931 ≥13 ≥600 285-341

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d5 Elongation after rupture
KCU Toughness
HB Brinell hardness number

Technological properties

Name The value
Particularities of production of goods 45ХГМА steel is smelted in electric-arc furnaces with subsequent ladle treatment of integrated and supplied to customers in a cold state in the form of continuous cast billets and ingots for further hot processing, and also serving for the manufacture of heavy drilling and leading pipes. Ingots are cast siphon method in broad upward of the mold with the use of exothermic slag-forming mixtures and. Nepreryvnolityh of the workpiece on the other 26-12-802-90 are supplied in a cold condition after slow cooling in an unheated well without prior heat treatment.