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ASTM A210 / ASME SA210 / Seamless Medium Carbon Steel Boiler and Superheater Tubes supplier & distributor in India


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ASTM A210M-88 / ASME SA 210


This standard is issued under the fixed designation A 210/A 210M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon ( ε) indicates an editorial change since the last revision or reapproval. 


1.1 This specification covers minimum-wall-thickness, seamless medium-carbon steel, boiler tubes and boiler flues, including safe ends (Note 1), arch and stay tubes, and superheater tubes. NOTE 1?This type is not suitable for safe ending by forge welding. 

1.2 The tubing sizes and thicknesses usually furnished to this specification are 1/2 in. to 5 in. [12.7 to 127 mm] in outside diameter and 0.035 to 0.500 in. [0.9 to 12.7 mm], inclusive, in minimum wall thickness. Tubing having other with all other requirements of this specification.

1.3 Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in thickness.

1.4 When these products are to be used in applications conforming to ISO Recommendations for Boiler Construction, the requirements of Specification A 520 , shall supplement and supersede the requirements of this specification.

1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the 
SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining value from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the "m" designation of this specification is specified in the order.Chemical Requirements

Element Composition, %
Grade A-1 Grade C
CarbonA, max 0.27 0.35
Manganese 0.93 max 0.29-1.06
Phosphorus, max 0.035 0.035
Sulfur, max 0.035 0.035
Silicon, min 0.10 0.10

A For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06 % manganese 
above the specified maximum will be permitted up to a maximum of 1.35 %.

Tensile Requirements

- Grade A-1 Grade C
Tensile strength, min, psi [MPa]
Yield strength, min, psi[MPa]
Elongation in 2 in. or 50 mm min, %: 
For longitudinal strip tests a deduction shall be made for each 1/32-in. [0.8-mm] decrease in wall thickness below 5/16 in. [8 mm] from the basic minimum elongation of the following percentage 
When Standard round 2-in. or 50-mm gage length or smaller proportionally sized specimen with the gage length equal to 4D (four times the diameter) is used
60 [415] 70 [485]
37 [255] 40 [275]
30 30
1.50A 1.50A
22 20
AThe following table gives the computed minimum values:
Wall Thickness, in. [mm] Elongation in 2 in. 50 mm, min, %B
5/16 (0.312) [8] 30
9/32 (0.281) [7.2] 28
1/4 (0.250) [6.4] 27
7/32 (0.219) [5.6] 26
3/16 (0.188) [4.8] 24
5/32 (0.156) [4] 22
1/8 (0.125) [3.2] 21
3/32 (0.094) [2.4] 20
1/16 (0.062) [1.6] 18
0.062 to 0.035 [1.6 to 0.9], excl 17
0.035 to 0.022 [0.9 to 0.64], excl 16
0.022 to 0.015 [0.6 to 0.4], incl 16

Note-The above table gives the computed minimum eiongation values for each 1/32-in. [0.8 mm] decrease in wall thickness. Where the wall thickness lies between two vallues shown above. the minimum elongation value shall be detemined by the following equation: E = 48t = 15.00 [E= 1.87t = 15.00] 

E = elongation in 2 in.or 50 mm, %, and

t = actual thickness of specimen, in. [mm].

BCalculated elongation requirements shall be rounded to the nearest whole number.

Material Comparison Tables (ASTM →KS, JIS, DIN, BS, NBN, NF, UNI) 

KS/JIS Symbol KS/JIS Numbe Remarks DIN Type DINNumber MateriralNumber B.SNumber B.S Grade Remarks NBN Type NBN Grade Remarks AFNOR Type NF Number Ramarks UNI Type UNI Number Ramarks
A 210Seamless Medium-Carbon Steel Boiler and Superheater Tubea                                      
Grade A-1 K02707 STHA 410 / STB 410 D3563 / G3461 (30)(24) St 45.8 17175 1.0405 3059 320 (30) D45 837 (13) TU A42-C A49-213 (6)(13) C 18 5462 (38)

JIS Number and Corrensponding Foreign Standards

Standard Number Grade Type Standard Number Grade Type Standard Number Grade Type Standard Number Grade Type Standard Number Grade Type Standard Number Grade Type
G3461 STB340 C A161 LC C 3059 HFS320 C       A49-245 TS34e C       C010
  (STB35)   A192 - C " CFS320 C       " TS34c C        
      A226 - C " ERW320 C                    
      A556 GrA2 C " CEW320 C                    
      A557 GrA2 C " S1 360 C                    
            " S2 360 C                    
            " ERW 360 C                    
            " CEW360 C                    
            3606 ERW320 C                    
            " CEW320 C                    
            " CFS320 C                    
  STB410 C A179 GrC C 3059 S1 440 C 17175 St45.8 C A49-213 TU42c C 2604/2 TS9H C  
  (STB42)   A210 GrA1 C " S2 440 C 17177 St42.8 C A49-215 TU42c C " TW9H C  
      A556 GrB2 C " ERW 440 C       A49-243 TS42c          
      A557 GrB2 C " CEW 440 C       A49-245 TS42c          
            3602 HFS 410 C       " TS42c          
            " CFS 410 C                    
            " ERW 410 C                    
            " CEW 410 C                    
            3606 ERW 440 C                    
            " CEW 440 C                    
            " CFS 440 C                    
STB510 C             C 17175 19Mn5 C A49-213 TU52C C 2604/2 TS18 C  
(STB52)               C       A49-248 TU52C C        

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