ASTM A519 4140 Seamless OD76 WT8.0 +N Cold Drawn Precision Steel Tube h10 ID Tolerance for Marine Hydraulic Ram

ASTM A519 4140 OD76 WT8.0 Cold Drawn Precision Steel Tube h10 ID Tolerance

Product overview. This ASTM A519 grade 4140 precision steel tube is cold drawn to a h10 id tolerance and supplied in +N delivery condition. Wall thickness is controlled within +/-5 percent and straightness within 0.3 mm per meter, so the tube seats cleanly in marine hydraulic ram assemblies without extra sizing, reaming or scrap loss on the line.

Tolerance control scheme

Key features

• Tight dimensional window on OD, wall and bore keeps fit and roundness repeatable batch to batch
• Alloy quenched tempered, produced on cold drawing lines with in-process laser gauging
• No cracking under flaring, flattening and cold bending tests
• Holding pressure without leakage after hydraulic proof test
• Ends cut square and deburred, plastic caps fitted on both ends

Typical application

Marine Hydraulic Ram and similar assemblies that depend on stable bore and OD tolerance for sealing, guiding or fitting.

Quality documents

EN 10204 3.1 mill test certificate, dimensional inspection report, eddy current or hydrostatic test report on request. ISO 9001 and IATF 16949 certified production.

Packing and shipping

Anti-rust oil, plastic end caps, woven bag bundled, seaworthy wooden case. Hexagonal or square bundled packing available for container loading.

Send your drawing and tolerance requirement, we will confirm the closest mill standard and quote within 24 hours.