LTCS Pipe - All You Need to Know

Table of Content

Know About A333 Low Temp Pipe Specification and Schedule Chart

A333 Low Temperature Pipe Specification

LTCS Full Form

Low Temperature Carbon Steel Pipe

Standard

ASTM A333/A333M, SA333

Grade

Grade 1, 3, 4, 6, 7, 8, 9, 10 & 11

Wall Thickness

1.24 mm to 1 inch

Length

20 ft to 40 ft

Outside Diameter

NPS 1/8 inch to 20 inch

Application

Chemical Plant, Oil & Gas

Manufacturing Process

ERW/Welded/Seamless

Coating

3 LPE, FBE, Galvanized

Low Temperature Carbon Steel Chemical Composition

Element	Grade 1	Grade 3	Grade 6
Element	Composition %
Manganese	0.40 – 1.06	0.31 – 0.64	0.29 – 1.06
Sulfur	0.025	0.025	0.025
Nickel	-	3.18 – 3.82	-
Carbon	0.3	0.19	0.3
Phosphorous	0.025	0.025	0.025
Silicon	-	0.18 -0.37	0.10 min

Mechinical Properties Of LT Carbon

Grade	Tensile Strength (MPa)	Yield Point (MPa)	Elongation (%)
Grade	Tensile Strength (MPa)	Yield Point (MPa)	Y	X
Grade 3	≥ 450	≥ 240	≥ 30	≥ 20
Grade 6	≥ 415	≥ 240	≥ 30	≥ 16.5
Grade 8	≥ 690	≥ 515	≥ 22	-
Grade 10	≥ 550	≥ 450	≥ 22	-
Grade 1	≥ 380	≥ 205	≥ 35	≥ 25
Grade 4	≥ 415	≥ 240	≥ 30	≥ 16.5
Grade 7	≥ 450	≥ 240	≥ 30	≥ 22
Grade 9	≥ 435	≥ 315	≥ 28	-
Grade 11	≥ 450	≥ 240	≥ 18	-

Temperature Range Of Astm A333

Temperature Range
°F	°C
50°F	46°C

Wall Thickness Chart Of LT Carbon Steel

Wall Thickness		Grade 3		Grade 6		Grade 1
in.	mm	Longitudinal	Transverse	Longitudinal	Transverse	Longitudinal	Transverse
9/32 (.281)	7.2	28	19	28	15	33	24
7/32 (.219)	5.6	26	-	26	-	30	-
5/32 (.156)	4	22	-	22	-	26	-
3/32 (.094)	2.4	20	-	20	-	23	-
5/16 (0.312)	8	30	20	30	16	35	25
1/4 (.250)	6.4	27	18	27	15	32	23
3/16 (.188)	4.8	24	-	24	-	28	-
1/8 (.125)	3.2	21	-	21	-	25	-
1/16 (.063)	1.6	18	-	18	-	21	-