II. Alloy groups are divided by the following major alloying elements
1. Cu (copper)     2XXX
Mn(Mn)..
3. Si (silicon) Si (silicon) 
4. Mg (magnesium) î—¥ î—¥ î—¥ î—¥ î—¥ 5XXX
5. Mg+Si (magnesium + silicon)  
 6. Zn (zinc) 7.
7. Other Elements 
8. Standby group 
The 1XXX group represents pure aluminum (its aluminum content is not less than 99.00%), and its last two digits indicate the lowest two percent of the aluminum content behind the decimal point.
The second digit of the grade indicates the control of the limit content of alloying elements or impurities. If the second digit is 0, it means that there is no special control of the impurity limit content; if it is 1-9, it means that one or one The individual impurities or alloy elements above the item have special limits.
The last two digits of the 2XXX-8XXX brand have no special meaning and are only used to identify different alloys in the same group. The second digit indicates the modification condition. If the second digit is 0, it indicates the original alloy; If it is 1-9, it means modified alloy.
Solenoid Valve Armature Assembly
Brando is a Solenoid Valve armature assembly manufacturer and exporter in Ningbo, China, which has more than 10 years experience.
The armature assembly or anchor system is the very important component of solenoid valve. An internal stainless steel plunger moves up and down to seal on the top and bottom valve seats. Brando provides armatures in multiple sizes depending on the application's flow requirement. Four common pneumatic functions are available which include:
1. 2/2 normally closed(NC),
2. 3/2 normally closed(NC),
3. 2/2 normally open(NO),
4. 3/2 normally open(NO).
The seals in the plunger are NBR (standard), but FKM, HNBR, PTFE, EPDM are available for different media and temperatures. Most of our armatures are designed to accept AC and DC voltages. Some armatures are DC only for low watt applications.
Brando offers flexibility as the connection to the seat cavity can be with a thread/o-ring seal style or o-ring flange style that requires a mounting plate.
Solenoid Valve Armature, Solenoid Valve Plunger, Solenoid Valve Armature Plunger
NINGBO BRANDO HARDWARE CO.,LTD , https://www.brandopneumatic.com