ASTM A210 Seamless medium carbon steel boiler and superheater tubes

Applications: for Boilers,Superheaters,Steam linepipes of boilers                

Size range: O.D.:12.7-127mm     W.T.:1-15mm      L: according to customer requirement      

 

 

Steel Grade and Chemical Compositions:
Grade	C	Mn	P	S	Si
A-1	≤0.27	≤0.93	≤0.035	≤0.035	≥0.10
C	≤0.35	0.29-1.06	≤0.035	≤0.035	≥0.10

Mechanical properties:

Grade	Tensil Strength  Mpa(ksi)	Yield Point  Mpa(ksi)	Elongation
A-1	≥255(37)	≥415(60)	≥30%
C	≥275(40)	≥485(70)	≥30%

 

Tolerance for OD and WT(SA-450/SA-450M)
OD in(mm)	+	-	WT in(mm)	+	-
＜1''(25.4)	0.10	0.10	≤1.1/2''(38.1)	20%	0
1''～1.1''(25.4～38.1)	0.15	0.15	＞1.1/2''(38.2)	22%	0
＞1.1/2''～＜2''(38.1～50.8	0.20	0.20
2''～＜2.1/2''(50.8～63.5)	0.25	0.25
2.1/2''～＜3''(63.5～76.2)	0.30	0.30
3''～＜4''(76.2～101.6)	0.38	0.38
4''～＜7.1/2''(101.6～190.5)	0.38	0.64
＞7.1/2～9''(190.5～228.6)	0.38	1.14

 

Surface Condition:

Pickling or shot blasting, Passivated, Black Phosphating.

 

Tests and Inspection:

Flattening Test

Flaring Test

Hardness Test

Hydrostatic or Nondestruction Electric Test ( Eddy Current and Ultrasonic Testing)

 

Reference Documents:

ASTM A450/A450M     Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Ally Steel Tubes