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ASTM A179 / A179M - 90a

ASTM A179 / A179M - 90a Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes
Description Features Specifications Chemical Composition SA-450/SA-450M

ASTM A179 Tubes shall be made by the seamless process and shall be cold drawn. Heat and product analysis shall be performed wherein steel materials shall conform to required chemical compositions of carbon, manganese, phosphorus, and sulfur. The steel materials shall also undergo hardness test, flattening test, flaring test, flange test, and hydrostatic test.

Because of ASTM A179 grade’s temperature withstanding capabilities, it is applied to steel pipe of tubular heat exchanger, condensers and similar heat transfer equipment. Our ASTM A179 seamless tubes are used in sugar mills & distilleries, pumps and petrochemicals, cement and construction industries and steel plants. Sunny Steel can supply ASTM A179 steel tube from stock or from reputed steel mills. We also offer steel fabrication service where steel plates can go through processings like cutting, welding, bending, machining, pre-coating, pre-lined, beveling, or as you require.

Read more... This specification covers minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus. Tubes shall be made by the seamless process and shall be cold drawn. Heat and product analysis shall be performed wherein steel materials shall conform to required chemical compositions of carbon, manganese, phosphorus, and sulfur. The steel materials shall also undergo hardness test, flattening test, flaring test, flange test, and hydrostatic test.
Note:
Features Specifications
OD(mm)  Wall Thickness Unit(mm)
2 2.5 3 3.5 4 4.5 5 6 6.5-7 7.5-8 8.5-9 9.5-10 11 12
Φ25-Φ28                
Φ32                
Φ34-Φ36                
Φ38                
Φ40                  
Φ42                  
Φ45                
Φ48-Φ60              
Φ63.5              
Φ68-Φ73                
Φ76        
Φ80        
Φ83        
Φ89        
Φ95        
Φ102        
Φ108        
Φ114          
Φ121          
Φ127          
Φ133          
Φ140            
Φ146            
Φ152            
Φ159            
Φ168            
Grade and Chemical Composition (%)
Chemical Composition C Mn P≤ S≤ Si≤
0.06-0.18 0.27-0.63 0.035 0.035 0.25
Mechanical properties
Yield Strength (Mpa) Tensile Strength (Mpa) Elongation (%)
≥180 ≥325 ≥35
SA-450/SA-450M
OD In (mm) + - WT In(mm) + -
<1(25.4) 0.10 0.10 ≤1.1/2(38.1) 20% 0
11.1/2(25.438.1) 0.15 0.15 >1.1/2(38.1) 22% 0
>1.1/2<2(38.150.8) 0.20 0.20
2<2.1/2(50.863.5) 0.25 0.25
2.1/2<3(63.576.2) 0.30 0.30
34(76.2101.6) 0.38 0.38
>47.1/2(101.6190.5) 0.38 0.64
>7.1/29(190.5228.6) 0.38 1.14
Material Comparison Tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)
A 179 Seamless Cold Drawn Low-C Steel Heat Exchanger and Conderser Tubes
ASTM
UNS NO.
KOREA/JAPANES

GERMAN

BRITISH
BELGIAN
FRENCH
ITALIAN
KS/JIS Symbol
KS/JIS Numbe
Re
DIN Type

DIN

Materiral
Number

Re

B.S

B.S Grade
Re
NBN Type
NBN Grade
Re
AF
NF
Re
UNI Type
UNI
Re
ASTM A179 K01200 STBH 340 / STB 35 D3563 / G3461 St 35.4 1629

1.0309

  3606 CFS 320   D 37-2 629 (3b) TU 37 C A49-215 (3a) C 14 5462
        St 35.8 17175 1.0305 Plus
DIN 2391 Gutegard C.NBK
           
U-Bend Fabrication Tolerances:
Item Condition (when) Tolercance
  Nominal bend radius ≤ 2 x nominal OD less than or equal to 12%
Ovality 2 x nominal OD < Nominal bend radius ≤ 4 x nominal OD less than or equal to 10%
  Nominal bend radius > 4 x nominal OD  less than or equal to 5%
  Nominal bend radius ≤ 2 x nominal OD 0.75 x nominal wall
Mimimum wall thickness 2 x nominal OD < Nominal bend radius ≤ 4 x nominal OD 0.8 x nominal wall
  Nominal bend radius > 4 x nominal OD 0.9 x nominal wall
  Nominal bend radius ≤ 8" (200mm) +/-3/64"(1mm)
Bending Radius 8" (200mm) < Nominal bend radius ≤ 16" (400mm) +/-1/16"(1mm)
  Nominal bend radius >16" (400mm) +/-5/64"(1mm)
Disrance between legs   Max 1/16"(1.5mm)
Wall thinning of bending area   Max 17%
Difference between leg lengths at the ends Leg length ≤ 16' (4.88m) +1/8"(3mm)
Leg length > 16' (4.88m) +3/16"(5mm)
Deviation from plane of bend   ≤ 3/16"(1.5mm)
Flattening on bend   ≤ 10% nominal diameter
Straight leg length ≤5m +1/8"(3mm)
>5m +3/16(5mm)
Total tube length including radius ≤6m +3/16(5mm)
>6m +5/16"(8mm)


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