Alloy 20 Pipes & Tubes

Chemical Composition & Mechanical Properties of Alloy 20 Pipes & Tubes

Specification	Type	Grade	C (Max)	Mn (Max)	P (Max)	S (Max)	Si (Max)	Cr	Ni	Mo	Cu	Yield Strength (Min) MPa	Tensile Strength (Min) MPa	% Elongation	Hardness (Max)
ASTM B729	Seamless	Alloy 20	0.07	2	0.035	0.035	1	19-21	32-38	02-Mar	03-Apr	241	551	30	90 HRB
ASTM B464	Welded	Alloy 20	0.07	2	0.035	0.035	1	19-21	32-38	02-Mar	03-Apr	241	551	30	90 HRB
ASTM B468	ERW	Alloy 20	0.07	2	0.035	0.035	1	19-21	32-38	02-Mar	03-Apr	241	551	30	90 HRB

Category	Details
Standard Pipe Dimensions	Outer Diameter (OD): 1/8" (0.375") to 48" (12.5 cm)
	Wall Thickness (WT): Varies from Schedule 10 to Schedule 160
	Schedules: 5, 10, 20, 40, 80, 160, XXS (Extra Extra Strong), etc.
Pipe Manufacturing Process	Seamless Pipe: Formed from a solid billet, no welding required
	Welded Pipe: Made from welded stainless steel coils
	ERW (Electric Resistance Welded): Uses electric resistance for welding
	Spiral Welded Pipe: Weld spirally wound around the pipe (for large sizes)
Surface Finishes	Mill Finish: Basic finish from manufacturing
	Pickled and Passivated: Removes scale and oxide for better corrosion resistance
	Polished: Mirror or satin finish for aesthetic and sanitary applications
	Brushed: Textured, non-reflective surface for architectural use
Applications	Industries Served: Food & Beverage, Chemical & Petrochemical, Marine & Offshore, Oil & Gas

Spec	Outside Dia.	Pipe Body	Pipe End	Wall Thickness	Weight	Length (Nominal)	Avg (mm)	Minimum	Maximum
ASTM B729	±0.1%	N.A.	+10%, -5%	±10%	10%	Upto 6m: ±3mm	±3mm	-6mm	+6mm
ASTM B464	±0.15%	N.A.	+10%, -5%	±10%	10%	Upto 6m: ±3mm	±3mm	-6mm	+6mm
ASTM B468	±0.10%	N.A.	+10%, -5%	±10%	10%	Upto 6m: ±3mm	±3mm	-6mm	+6mm