stainless steel Pipe Data

Seamless & Welded Standard Pipe Tolerances

Nominal Pipe Size Inches	Outside Diameter Tolerances
	A312 Seamless		A312 Welded		A376 Seamless
	Plus	Minus	Plus	Minus	Plus	Minus
1/8 IPS to 11/2 IPS incl.	.015î	.031î	.015î	.031î	.015î	.031î
2 IPS to 4 IPS incl.	.031î	.031î	.031î	.031î	.031î	.031î
5 IPS to 8 IPS incl.	.062î	.031î	.062î	.031î	.062î	.031î
10 IPS to 12 IPS incl.	.093î	.031î	.093î	.031î	.093î	.031î
Wall Tolerances	By Wt.	12.5%	By Wt.	12.5%	By Wt.	12.5%
Weight Tolerances	10.0%	3.5%	10.0%	3.5%	10.0%	3.5%

Welded A409 Light Wall Pipe Tolerances

Nominal Pipe Size Inches		O.D. Tolerances		Wall Tolerances		Ovality Tolerances
O.D.	Wall	Plus	Minus	Plus	Minus	Plus	Minus
14 to 30	Under .188	.20%	.20%	*	.018î	1.5%	1.5%
14 to 30	188 & Over	.40%	.40%	*	.018î	1.5%	1.5%
*Wall plus tolerance determined by A480 sheet thickness tolerances

Welded A358 Heavy Plate Pipe Tolerances

Nominal Pipe Size Inches	O.D. Tolerances		Wall Tolerances		Ovality Tolerances
	Plus	Minus	Plus	Minus	Plus	Minus
8 IPS and Larger	0.5%	.05%	*	.010î	1.0%	1.0%
*Wall plus tolerance determined by A240 plate thickness tolerances.

Pipe Description

Specification	Summary
ASTM-A-312	Seamless or Welded Without Filler Metal
ASTM-A-358	Fusion Welded from Plate With Filler Metal
ASTM-A-376	Seamless for High Temperature Service
ASTM-A-409	Welded Light Wall Pipe, Filler Metal Optional

Typical Properties

Material Designation	Tensile Strength Minimum	Yield Strength Minimum	Elongation in 2 Inches Minimum
Standard ì300î Series	75,000 psi	30,000 psi	35%
ì300î Series ìLî Grades	70,000 psi	25,000 psi	35%
ì300î Series ìHî Grades	75,000 psi	30,000 psi	35%

The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other purposes.

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