ERW Boiler & Air Heater Tubes

Product Applications

Chemical Composition & Mechanical Properties

Specification	Type	Grade	Chemical Composition%								Mechanical Properties										Remarks Impect /Hardness
											Yield Strength				Tensile Strength				% Elongation e
											Min.		Max.		Min.		Max..
			C		Mn.		P	S	SI		Min.		Max.		Min.		Max..
			Min.	Max.	Min.	Max.	Min.	Max.	Min.	Max.	PSI	MPa	PSI	MPa	PSI	MPa	PSI	MPa
IS: 2416 Pt-IV	ERW	310	0.08	0.25	0.35	1.4	0.05	0.05		0.35	-	152	-	-	-	304	-	402	(100-RM / 9.81) /C, C=2.20 , RM=Measured T.S
		360	0.08	0.25	0.35	1.4	0.05	0.05		0.35	-	177	-	-	-	353	-	451
		440	0.08	0.25	0.35	1.4	0.05	0.05	-	0.35	-	201	-	-	-	402	-	500
IS :11714 Pt-III	ERW	-	0.06	0.18	0.27	0.63	0.048	0.058	-	-	-	-	-	-	-	-	-	-	-		72 HRB(Max.)
IS : 1914 Pt-IV	ERW	320	0.08	0.25	0.35	1.4	0.05	0.05	-	0.35	-	176	-	-	-	320	-	480	(100-RM / 9.81) /C, C=2.20 , RM=Measured T.S		-
		360	0.08	0.25	0.35	1.4	0.05	0.05	-	0.35	-	198	-	-	-	360	-	500			-
		440	0.08	0.25	0.35	1.4	0.05	0.05	-	0.35	-	242	-	-	-	440	-	580			-
BS:3059 Pt-I	ERW	320	-	0.16	0.30	0.70	0.040	0.040	-	0.35	-	195	-	-	-	320	-	480	25		-
BS:3059 Pt-II	ERW	360	-	0.17	0.4	0.8	0.035	0.035	0.1	0.35	-	235	-	-	-	360	-	500	24		-
BS:3059 Pt-II	ERW	440	0.12	0.18	0.9	1.2	0.035	0.035	0.1	0.35	-	245	-	-	-	480	-	580	21		-
BS:6323 Pt-V	ERW	ERW-1	-	0.13	-	0.6	0.05	0.05	-	-	-	200	-	-	-	300	-	-	D/a< 20 10 8 7	D/a >20 20 15 12	-
		ERW-2	-	0.16	-	0.7	0.05	0.05	-	-	-	250	-	-	-	340	-	-			-
		ERW-3	-	0.2	-	0.9	0.05	0.05	-	0.35	-	300	-	-	-	400	-	-			-
		ERW-3	-	0.2	-	0.9	0.05	0.05	-	0.35	-	300	-	-	-	400	-	-			-
ASTM- A-178	ERW	A	0.06	0.18	0.27	0.63	0.035	0.035	-	-	26,000	180	-	-	47,000	325	-	-	35		-
ASTM- A-178	ERW	C	-	0.35	-	0.8	0.035	0.035	-	-	37,000	255	-	-	60,000	415	-	-	30		-
ASTM- A-214	ERW	-	-	0.18	0.27	0.63	0.035	0.035	-	-	-	-	-	-	-	-	-	-			72 HRB(Max.)
ASTM A333 & A334	ERW	1	-	0.30	0.40	1.06	0.025	0.025	-	-	30,000	205	-	-	55,000	380	-	-	35		18 J , 85 HRB (Max.)
ASTM A333 & A334	ERW	6	-	0.30	0.29	1.06	0.025	0.025	0.10	-	35,000	240	-	-	60,000	415	-	-	30		18 J , 90 HRB (Max.)

Tolerance on Outside Diameter/Dimensions/Wall Thickness, Weight & Length of Pipe

Spec

Outside Dia.

Wall Thikness

Weight

Length

Pipe Body

Pipe End

Nominal

Avg.(mm)

Minimum

Maximum

mtr

IS : 1914 Pt-IV

+0,-1%

N.A.

+10%,-5%

N.A.

Tolrence - Upto 9mtr. +3, -0mm
Above 9mtr. +6,-0mm

IS: 2416 Pt-IV

±0.75%(±0.30 mm min.)

N.A.

+10%,-5%

N.A.

Tolrence - Upto 9mtr. +3, -0mm
Above 9mtr. +6,-0mm

IS :11714 Pt-III

As per Table

N.A.

+18%,-0

+10%,-0

Tolerance - Below 50 mm OD +3.2,-0mm
50mm OD & Above +4.8, -0mm

BS:3059 Pt-I

±0.75%(±0.30 mm min.)

N.A.

Upto3.25mm±10%
Over 3.25mm ±7.5%

N.A.

Tolerance - Upto 6mtr. +6, -0 mm
Above 6mtr 1.5mm will increase for every 3 mtr increase of length.(12mm max.)

BS:3059 Pt-II

±0.75%(±0.30 mm min.)

N.A.

±10%(excluding weld area)

N.A.

BS:6323 Pt-V

As per Table

N.A.

Less Than 3mm +10% 3mm & Above +8%

N.A.

Tolerance - Upto 0.5 mtr.+2,-0mm
0.5 to 2mtr. +3,-0mm ; 2 to 5mtr, +5,-0mm;
5 to 7 mtr. +10, -0mm ; Above 7mtr.as agreed

ASTM- A178 &A214

±0.15to ±0.38mm

N.A.

+18%,-0

+10%,-0

Tolerance- Under 50.8mm OD +3,-0mm
50.8 & above +5, -0mm

ASTM- A333 & A334

±0.15 to ±0.38mm

N.A.

+18%,-0

+10%,-0

4.88

671

10.67

6.71