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

Steel 15L

Designation

Name The value
Designation GOST Cyrillic 15Л
Designation GOST Latin 15L
Transliteration 15L
The chemical elements 15

Description

15L steel is used: for the manufacture of pile drivers women, rollers, housings, leashes, grips, saw frames, details of welded-cast structures with a large amount of welding, plates, pillows, and other non-critical parts, working medium under the action of static and dynamic loads; the castings 1, 2 and 3 parts of valves and actuators to it (details of the magnetic, covers, caps, electromagnetic actuators and valves), working in different environments at temperatures from -40 to +400 °C and a nominal pressure up to 6.3 MPa (63 kgf/cm2); casting equipment parts (valves) for nuclear power stations, heat supply stations, heat and power plants, experimental and research nuclear reactors and installations.

Standards

Name Code Standards
Castings, steel В82 GOST 977-88, OST 26-07-402-83, OST 24.920.01-80, OST 3-4365-79, TU 26-02-19-75, TU 108.11.352-87, ST ЦКБА 014-2004, TU 5.961-11151-92
Welding and cutting of metals. Soldering, riveting В05 RTM 108.020.122-78

Chemical composition

Standard C S P Mn Si Fe
GOST 977-88 0.12-0.2 ≤0.04 ≤0.04 0.45-0.9 0.2-0.52 The rest
TU 5.961-11151-92 0.12-0.2 ≤0.025 ≤0.025 0.45-0.9 0.2-0.52 The rest
Fe is the basis.
According to GOST 977-88 the mass fraction of S and P content is indicated for 1 group of castings from the main steel. The content of sulfur and phosphorus in the castings of groups 2 and 3, in sour and basic open-hearth steel - see Table 4a in GOST 977-88.
According to TU 5.961-11151-92 for castings of grades 1 and 2 the mass fraction of cobalt in steel should not exceed 0.20%, and for castings in the direct irradiation zone - 0.15%.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d y, % kJ/m2, кДж/м2 Brinell hardness number, MPa
Casting. Normalization at 910-930 °C or Normalizing at 910-930 °C + Vacation at 670-690 °C
100 ≥196 ≥392 ≥24 ≥35 ≥491 -
Castings with wall thickness up to 100 mm in the delivery state on the other 5.961-11151-92. Normalization at 910-930 °C + Vacation at 670-690 °C
- ≥196 ≥392 ≥24 ≥35 ≥490 109-136
- ≥160 ≥370 - ≥34 - -
- ≥140 ≥350 - ≥32 - -
- ≥120 ≥340 - ≥30 - -

Description mechanical marks

Name Description
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d Elongation after rupture
y The relative narrowing
kJ/m2 Toughness

Physical characteristics

Temperature r, кг/м3 l, Вт/(м · °С) a, 10-6 1/°С С, Дж/(кг · °С)
0 7820 - - -
20 7820 - - -
100 - 78 119 470
200 - 67 119 470
400 - 48 136 479
500 - 41 136 -
300 - - 125 -
700 - - 142 -
600 - - - 517
800 - - - 571

A description of the physical symbols

Name Description
Е The normal elasticity modulus
r Density
l Coefficient of thermal conductivity
С Specific heat

Technological properties

Name The value
Weldability Welded without any restrictions. Welding methods: SMAW, ADS under gas protection electroslag welding. After repair of defects by welding is applied leave in 619-660 °C.
Propensity to temper brittleness Tend not.
Flock-sensitive sensitivity not sensitive.
Defect welding Welding defects of castings after cutting is usually carried out without prior and concomitant heating. By semiautomatic welding in carbon dioxide environment used welding wire SV-08G2S diameter of 2 mm at a current of 380-420 A. Welding defects by manual welding is done with electrodes Э42А type (GOST 9467) brand SSSI-13/45. When welding the hard contour of the casting or of the sample volume more than 2000 cm3 is recommended before applying the first roller to pre-heating at 120-150 °C. When welding is sample size more than 5000 cm3 it is necessary to produce preliminary and accompanying heating to 150-180 °C.

Our consultant will save your time

+49(1516) 758 59 40
Telegram:
WhatsApp:

Subscription

Special offers and discounts. :)