Brass L68
Brass LO70-1
Brass LMZA57-3-1
Brass LMzAJKS70-7-5-2-2-1
Brass LMZh57-1,5-0,75
Brass LMtsKA58-2-1-1
Brass LMtsKNS58-3-1,5-1,5-1
Brass LMtsKNSA58-3-1,5-1,5-1
Brass LMtsSKa58-2-2-1-1
Brass LMsh68-0,05
Brass LN65-5
Brass LNKMts49-10-0,3-0,2
Brass LNKoMts49-9-0,2-0,2
Brass ЛНМц60-9-5
Brass LO60-1
Brass LO62-1
Brass LKS65-1,5-3
Brass LO90-1
Brass LOK59-1-0.3
Brass LOMNA49-0,5-10-0,4-0,4
Brass Lomsh70-1-0.04
Brass Lomsh70-1-0.05
Brass LS58-2
Brass LS58-3
Brass LS59-1
Brass LS59-1B
Brass LS59-2
Brass LS60-1
Brass LS63-3
Brass LS64-2
Brass LS74-3
Brass LA85-0.5
Brass L59
Brass L60
Brass L63
Brass L66
Brass L68
Brass L70
Brass L72
Brass L75mk
Brass L80
Brass L85
Brass L90
Brass L96
Brass LA77-2
Brass LA77-2u
Brass LMZ58-2
Brass LAJ60-1-1 (LAJ60-1-1L)
Brass LAZHMTS52-2-1-1,5-1
Brass LAMsh77-2-0,04
Brass LAMSh77-2-0,05
Brass LAN59-3-2
Brass LANKMZ 75-2-2,5-0,5-0,5 (alloy 156)
Brass LAF94-0,5-0,15
Brass LZMc59-1-1
Brass LZhS58-1-1
Brass LC62-0.5
Brass LK75B
Brass LCAN80-1-1,9-5,8
Brass ЛКАНМЦ75-2-2,5-0,5-0,5
Brass LCBO62-0,2-0,04-0,5
Designation
| Name |
The value |
| Designation GOST Cyrillic |
Л68 |
| Designation GOST Latin |
L68 |
| Transliteration |
L68 |
| The chemical elements |
Л68 |
Description
Brass L68 is used: for the manufacture of semi-finished products (strips, sheets, strips, tubes, wire); the various parts by means of deformation in the cold state (cold heading and deep drawing); round drawn thin-walled tubes; drawn and cold-rolled pipes used in heat exchangers; wire screens; radiator strips.
Note
Simple (double) brass.
Standards
| Name |
Code |
Standards |
| Tapes |
В54 |
GOST 1018-77, GOST 15527-2004, GOST 2208-2007, TU 48-0813-40-90, TU 48-21-246-82, TU 48-21-725-85, TU 48-21-656-85, TU 48-21-5005-90 |
| Wire of non-ferrous metals and their alloys |
В74 |
GOST 1066-90, GOST 1066-2015, TU 48-21-5027-73, TU 48-21-5061-73 |
| Non-ferrous metals, including rare metals, and their alloys |
В51 |
GOST 28873-90 |
| Pipes from non-ferrous metals and alloys |
В64 |
GOST 494-90, GOST 11383-75, GOST 21646-2003, GOST 494-2014, TU 48-0813-20-86, TU 48-21-869-89 |
| Sheets and stripes |
В53 |
GOST 931-90, GOST 5362-78, TU 48-21-5031-91 |
Chemical composition
| Standard |
S |
P |
Fe |
Cu |
As |
Zn |
Sb |
Pb |
Bi |
| GOST 5362-78 |
≤0.002 |
≤0.005 |
≤0.07 |
67-70 |
≤0.005 |
The rest |
≤0.002 |
≤0.03 |
≤0.002 |
| GOST 2208-2007 |
- |
≤0.01 |
≤0.1 |
67-70 |
- |
The rest |
≤0.005 |
≤0.03 |
≤0.002 |
Cu is the basis.
According to GOST 5362-78, the total mass fraction of normalized impurities should be ≤ 0.20%.
According to GOST 15527-2004, GOST 2208-2007 the amount of other elements should be ≤ 0.30%. In brass, the mass fraction of nickel is allowed up to 0.30% due to the mass fraction of copper, which is not taken into account in the sum of other impurities. For antimagnetic brass, the mass fraction of iron should not exceed 0.030%. In the brass intended for the manufacture of special-purpose products, the mass fraction of the elements should not be more: iron - 0.070%, antimony 0.002%, phosphorus 0.005%, arsenic 0.005%, sulfur 0.002%; the sum of other elements ≤ 0.20%.
Mechanical characteristics
| Section, mm |
σB, MPa |
d |
d10 |
Brinell hardness number, MPa |
HV, MPa |
| The tape is supplied according to GOST 1018-77 (samples) |
| 0.45-0.9 |
≥290 |
≥42 |
- |
- |
- |
| 1-1.5 |
≥320 |
≥42 |
- |
- |
- |
| Sheets and strip, cold-rolled in the state of delivery according to GOST 931-90, sheets and strips GOST 2208-2007 (samples) |
| - |
290-370 |
- |
≥42 |
≥70 |
≥75 |
| - |
≥520 |
- |
- |
≥155 |
≥160 |
| - |
340-470 |
- |
≥20 |
≥105 |
≥110 |
| - |
430-540 |
- |
≥10 |
≥125 |
≥130 |
| Cold rolled strips in soft (annealed) delivery condition according to GOST 5362-78 |
|
290-340 |
- |
≥50 |
- |
- |
| Pipe drawn and cold rolled according to GOST 21646-2003, GOST 494-90 in the state of delivery(samples) |
| - |
≥290 |
- |
≥40 |
- |
- |
| - |
≥340 |
- |
≥35 |
- |
- |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| σB |
Limit short-term strength |
| d |
Elongation after rupture |
| d10 |
Elongation after rupture |
| HV |
The Vickers hardness |
Physical characteristics
| Temperature |
Е, ГПа |
r, кг/м3 |
l, Вт/(м · °С) |
R, НОм · м |
| 20 |
112 |
8600 |
113 |
72 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| l |
Coefficient of thermal conductivity |
| С |
Specific heat |
