ASTM A199 Heat-Exchanger tubes, Condenser Tubes

ASTM A199 Standard specification

ASTM A199 covers several grades of minimum-wall-thickness, chromium-molybdenum and chromium-molybdenum-silicon, seamless, cold-drawn, intermediate alloy steel tubes for heat exchanger, condensers, and similar heat transfer apparatus. The tubing sizes usually furnished to this specification are 1/8 to 3 in. [3.2 to 76.2 mm) in outside diameter. Tubing having other dimensions may be furnished provided such tubes comply with all other requirements of this specification.

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

The values stated in either inch-pound units or SO units are to be regarded separately as standard. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values 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.

The ASTM A119 pressure boiler tube is wrapped with nylon fabric then bundled with 2 steel strips in each end, and other 2 in the middle.

Main grade we supply for ASTM A199

  • ASTM A199 T11
  • ASTM A199 T22
  • ASTM A199 T5

Delivery Condition:
Heat treatment, Annealed, Normalized, Normalized and Tempered
Surface treatment:
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting
Painting as requested.

ASTM A199 Heat-exchanger tube Chemical analysis (%):

Steel gradeWTCMnP
ASTM A199/T4MW0.15MAX0.30-0.600.030.030.50-1.002.15-2.850.44-0.65
ASTM A199/T5MW0.50-0.150.30-0.600.030.030.50MAX4.00-6.000.45-0.65
ASTM A199/T7MW0.15MAX0.30-0.600.030.030.50-1.006.00-8.000.45-0.65
ASTM A199/T9MW0.15MAX0.30-0.600.030.030.25-1.008.00-10.00.90-1.10
ASTM A199/T11MW0.50-0.150.30-0.600.030.030.50-1.001.00-1.500.44-0.65
ASTM A199/T22MW0.50-0.150.30-0.600.030.030.50MAX1.90-2.600.87-1.13
* Ni 0.40 max; V 0.18-0.25; Cb 0.06-0.10; N 0.03-0.07; Al 0.04 max

ASTM A199 Heat-exchanger tube mechnical properties

Steel gradeTensile Strength
Yield Strength
ASTM A199/T4415MIN170MIN30/22Hardness 85 HRB MAX
ASTM A199/T5415MIN170MIN30/22Hardness 85 HRB MAX
ASTM A199/T7415MIN170MIN30/22Hardness 85 HRB MAX
ASTM A199/T9415MIN170MIN30/22Hardness 85 HRB MAX
ASTM A199/T11415MIN170MIN30/22Hardness 85 HRB MAX
ASTM A199/T22415MIN170MIN30/22Hardness 85 HRB MAX


Steel pipe are ubiquitous and can be found underground and within residential walls, laboratories, and commercial and industrial structures. Seamless steel pipe transport fluids including water, natural gas, waste and air. Three manufacturing methods exist to produce steel pipes.

Seamless steel pipes are produced using an extrusion mold. Welded steel pipes are produced by rolling a sheet of steel into a tube and welding the seam. Seamless steel pipes are less expensive. The third method is casting. Molten steel is poured into a casting mold.

Our steel pipes and tubes are the preferred choice for processes under the following conditions:

  • high temperatures
  • aggressive media (e.g. acid and lye)
  • and/or high pressure

We have a team of experienced professionals with years of experience in manufacturing.

Material Comparison Tables

ASTM A 199 - Seamless Cold Drawn Intermediate Alloy Steel Heat Exchange and Condenser Tubes
KS/JIS SymbolKS/JIS NumbeRemarksDIN TypeDIN NumberMateriral NumberRemarksB.SB.S GradeRemarksNBN TypeNBN GradeRemarksAFNOR TypeNF NumberRamarksUNI TypeUNI NumberRamarks
T5K41545STHA 24 / STBA 25D3572 / G3462-3512 CrMo 19 51.7362(3a)3606CFS 625-35X 12 Cr Mo 5837-35Z 12 CD 5.05(3a)(3); dalmine 234
T11K11597STHA 22 / STBA 23D3572 / G3462-3513 CrMo 44171751.7335-83606CFS 621-3510 CD 5.05(3a)(3); dalmine 227(10)
T22K21590STHA 23 / STBA 24D3572 / G3462-3510 CrMo 9 10171751.7383606CFS 622-3510 Cr Mo 9 10837-3510 CD 9.10(3a)12CrMo 9 105462(10)0