got a tie-rod from spector w/one side gm thread and one toyota, for saginaw p/s. naturally tie-rod is for most common fj-40 inside frame horn conv., so is too short for my fj-55 outside frame scout box. so need to extend, tie-rod pipe is labled- heat no. A85251 Pacific W & D type 1020 ASTM-A-513 .875 x .120". question is can i weld this using the cut pipe instert 1/2 solid rod and sleeve gap leaving small space and weld all pipe,sleeve,rod method w/flux core mig?

thanks for any help,
Bill.

"Heat treatment of the 0.20 per cent carbon steel (1020 mild steel) produces but little change so far as strength is concerned, but it does cause a desirable refinement of the grain after forging, and materially increases the toughness. "

If heat treatment does not change the strength much, then welding on it isn't going make much difference either.

From the Machinery's Handbook:
http://www.newmex.com/ebear/metal/heattreat7.html#physical

Think of your "Heat #" as more of a batch number, there more for quality control purposes in order to track the pipe/tube in case of a manufacturing defect. Please note that the previous replys informatin came from the 1924 ed. of the Machinery's Handbook and I would not consider it a reliable resource.
1020 DOM STEEL TUBE
--------------------------------------------------------------------------------
1020 is normally used in the manufacturing of small-diameter or thin-wall DOM steel tube. DOM is formed from strip and electric-resistance welded, then cold drawn to size. The cold drawing process causes the weld line to virtually disappear.
American Specifications: ASTM A513 Type 5

British Specifications: 040 A 20, 070 M 20

Applications: Mechanical, hydraulic cylinders, shaft, tight tolerance requirements

Size Range: 1/4" - 14&1/2" (6 mm - 368 mm) OD; .035" - .625" (.9 mm - 16 mm) wall

Size & Weight Table:
Round Carbon Steel Tube


Typical Chemical Analysis: C .15-.25
Mn .30-.60
P .040 max
S .050 max
Typical Mechanical Properties: Tensile strength (ksi) 80
Yield point (ksi) 70
Elongation (% in 2") 15
Rockwell hardness RB80




Machinability: Excellent

Average Cutting Speed: 120 ft/min

Weldability: Excellent

Carburizing: May be carburized

any one know where i can get some 12 11/16 OD DOM tube??? i only need about a foot

Originally posted by jasonmt

Please note that the previous replys informatin came from the 1924 ed. of the Machinery's Handbook and I would not consider it a reliable resource.


Just because the information dates from the 1920s doesn't mean it is wrong. The metallurgy of mild steel has not changed since the time of Andrew Carnegie. If you compare the specs you quoted, they are the same as in 1924. Newtonian physics was understood by the 19th century and it hasn't changed since.

I'll be the first person to agree thatthe basic metallurgy has not changed for quite a long time, but that the process's used to alloy and heat treat have. 1020/A513 type 5 from 1924 is not going to be the same as it is now. Carbon and other alloying contents are going to be added within much tighter tolerances. The heat that the slugs are brought to, held at and cooled at are much more precise that they are in 1924. Saying metallurgy has not changed since 1924 is similar to saying welding has not changed since it's inception because it still uses a electric arc to fuse the metal. We all know that this statement is not true.