20GL Cast Structural Steel

Designation

Name The value
Designation GOST Cyrillic 20ГЛ
Designation GOST Latin 20GL
Transliteration 20GL
By chemical elements 20Mn

Description

20GL cast steel and service requirements

20GL is used in legacy material practice for cast components such as disks, sprockets, gear rims, drums and selected valve or railway parts. Some specifications describe cold-service or impact-toughness requirements, but the grade name alone does not certify low-temperature performance, pressure service or a finished casting. The drawing and governing casting or component standard must control the order.

Cast part and blank enquiry details

Provide the part drawing, nominal and finished dimensions, machining allowance, casting class, quantity and target delivery condition. State heat treatment, tensile and impact-property requirements, impact test temperature, chemical analysis, nondestructive examination, repair restrictions, pressure testing where applicable, marking and certificate needs. Evek LLC reviews the complete requirement before confirming a feasible production route, documentation and commercial terms.

Published applications and cold-service descriptions are reference information, not a guarantee for a delivered part. Acceptance follows the governing standard, drawing and lot certificate.

Information needed for a quote

Send 20GL, the governing standard, part drawing or product form, dimensions, heat treatment, quantity, testing, certificate needs and U.S. delivery ZIP code.

Stock, production route, origin, minimum quantity, compliance, certification, price and final delivery are confirmed during quotation. Product descriptions and reference data are not stock or suitability guarantees.

Related products and contact

Request a U.S. quote

Evek LLC serves buyers throughout the United States. Typical delivery is 2–3 weeks, subject to the exact material, specification, dimensions, quantity and availability. Send your requirement to Evek LLC with the U.S. delivery ZIP code.

Standards

Name Code Standards
Castings with special properties (iron and steel) В83 GOST 21357-87
Steel castings В82 GOST 977-88, OST 24.920.01-80, TU 24.05.486-82, ST ЦКБА 014-2004

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 977-88 0.15-0.25 ≤0.04 ≤0.04 1.2-1.6 - 0.2-0.4 - Rest -
TU 24.05.486-82 0.17-0.25 ≤0.04 ≤0.04 1.1-1.4 ≤0.3 0.3-0.5 ≤0.3 Rest ≤0.3
GOST 21357-87 0.17-0.25 ≤0.02 ≤0.02 1.1-1.4 ≤0.3 0.3-0.5 ≤0.3 Rest ≤0.3
Fe is the basis.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d y, % KCU, kJ/m2 HB, MPa
Annealing in air with 870-890 °C + vacation at 620-650 °C, air cooling
100 ≥334 ≥530 ≥14 ≥25 ≥383 -
Normalization at 880-900 °C + vacation at 600-650 °C, air cooling
100 ≥275 ≥540 ≥18 ≥25 ≥491 143-187
Casting parts well.d. composition. Normalizing or normalizing + vacation
- 294-343 ≥490 ≥20 ≥30 ≥490 -
- ≥343 ≥510 ≥18 ≥25 ≥490 -
Casting. Quenching in water from 920-940 °C + vacation at 600-620 °C, air cooling (KCU-60)
- ≥400 ≥500 ≥15 ≥30 ≥3 -
Casting. Normalization at 920-940 °C, air cooling (KCU-60)
- ≥300 ≥500 ≥20 ≥35 ≥3 -

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
d Elongation after rupture
y The relative narrowing
KCU Toughness
HB Brinell hardness number