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SWCH18K carbon steel wire rods for cold heading

 

SWCH18K carbon steel wire rods for cold heading

 

SWCH18K carbon steel wire rods is killed steel . SWCH18K is in the Japanese Industrial Standard JIS G3507 Part 2 : Wires .

Standard : JIS G3507
Grade : SWCH18K
Brand : Royal
Size of wire diameter : 5.5-34mm

SWCH18K annealing steel wire rods process methods :

(1)Process D : The Process D means a process wherein wire rods are finished by cold working .
(1)Process DA : The Process D means a process wherein wire having been cold worked are annealed and further finished by cold working or a process wherein wire rods are finished by cold working after annealing .

The steel wire rods SWCH18K shall be manufactures by process D or DA . However ,manufacturing processes other than given above may be selected by agreement between the purchaser and the supplier .

SWCH18K steel wire rods for screws mechanical properties :

Grade

process methods

Division of wire diameter/mm

Tensile strength MPa

Reduction of area %

(Informative)Hardness HRB

SWCH18K

process D

3~4

≥640

≥45

-

4~5

≥540

>5

≥440

≤95

process DA

-

≥410

≥55

≤86

Remarks:
For wires of 20mm or over in wire diameter,the reduction of area shall be value 5 lower than the value in table 2 .For those of diameter 3mm or less,the reduction of area is not specified .

SWCH18K cold heading steel wire rods application:
SWCH18K steel wire rods for cold heading is used for the manufacture of various types of screws such as bolts,nuts,rivets,machine screws and tapping screws and various parts by cold heading .

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