Name:  4140 Seamless Alloy Steel tube for Mechanical and Pressure Applications

Standard: ASTM A519

Size: OD 21mm to720mm;   WT 4mm to 200mm;    Length: customized according to requirements 

Certification: The hollow bar is supplied with 3.1.B inspection certificate,according to the standards ASTM A519.

Application:  It can be used to shafts, gears and parts subject to mechanical wear.

Surfaces Conditions: 1.Black surface with oxygen skin;
                               2.Grinded for external or internal surface, or external and internal surface;
                               3.Machined for external or internal surface, or external and internal surface.

Delivery Conditions: Hot Rolled, Cold Drawn, Stress Relieved, Annealed, Normalized.

Tube ends: The hollow bar comes with square cut and deburred ends.

Packaging:  All pipes shall be marked, in bundle, all items shall be plain end.

Delivery Time: 35 days after both parties confirmed.

Steel grade

% by mass

Name

C .

Si.

Mn.

P max.

S max.

Cr.

Mo

4140

0.38-0.43

0.15-0.35

0.75-1.00

0.040

0.040

0.80-1.10

0.15-0.25