Docol Tube R8

Docol Tube R8

Docol Tube R8 - Advanced High-Strength Steel - Dual Phase Steel

Docol Tube R8 are certified tubes that are engineered to provide a stronger, safer, more consistent alternative to 4130 CD seamless tube. This will allow you to build a faster, more consistent, longer lasting racecar that allows better utilization of tuning components.

Docol Tube R8 undergoes special heat treatment in a continuous annealing line, producing a two-phase structure. Ferrite that imparts unique forming properties represents one phase, and martensite that accounts for the strength represents the other phase. Docol is not a standard High Strength Steel (HSS), therefore during application and design, it is imperative to contact A.E.D. for specific technical properties.

Advanced High-Strength Steels (AHSS) are complex, sophisticated materials, with carefully selected chemical compositions and multiphase microstructures resulting from precisely controlled heating and cooling processes. The principal difference between conventional HSS and AHSS is their microstructure. Conventional HSS are single-phase ferritic steels with a potential for some pearlite in C-Mn steels. AHSS are primarily steels with a microstructure containing a phase other than ferrite, pearlite, or cementite. 

Advanced High-Strength Steels like Docol Tube R8 are not your mild steels of yesterday; rather they are uniquely engineered to meet the challenges of today's vehicles for stringent regulations, emissions reduction, and solid performance at affordable costs.

Key Advantages of Docol

  • Stronger than 4130 by 10 to 15 percent.
  • Heat Affected Zone (HAZ) is Docol is much smaller in area, less brittle and retains better elongation than 4130 typically does.
  • Docol is much more tolerant to heavy fabrication. It does not warp and distort like 4130 and stays more relaxed in tooling and fixtures during fabrication.
  • Greater resistance to fatigue.
  • Docol absorbs energy and presents a more consistent and controlled failure mode.
  • Clean mill finish product - minimal, if any, surface prep required. Docol does not have an oxide or decarb layer and looks like a high quality electric welded tube.
  • Accurate and consistent dimensional and mechanical properties because this material is a rolled and welded strip.
  • Compatible with welding to 4130 and mild steel components.
  • Suitable for TIG and MIG welding.
  • Clean "no scrap" based material.

Technical Information

  • Tensile Strength min.: 116,000 PSI
  • Yield Strength min.: 100,000 PSI
  • Elongation min.:  13%   (Docol's elongation value is much less critical due to its crystalline or Dual Phase microstructure)
  • As a seam-welded product, for best forming results, it is recommended to orient the seam in the neutral position.
  • Welding recommendations: ER80SD2 filler material for both TIG and MIG welding.
  • Docol as a finished tube is NOT heat treatable material. Any attempt to heat treat Docol may result in what is known as a "dead soft" material with minimal strength value.

               

DOCOL TUBE R8 COMES IN 19 TO 21 FOOT RANDOM LENGTHS

O.D. IN. Wall Thickness I.D. IN. Weight/Foot (lbs) Sku Add to Quote
.625
.035
0.555
0.2205
R8 62035
Add to Quote
.625
.049
0.527
0.3104
R8 62049
Add to Quote
.625
.058
0.509
0.3512
R8 62058
Add to Quote
.750
.049
0.652
0.3668
R8 75049
Add to Quote
.750
.058
0.643
0.4287
R8 75058
Add to Quote
.750
.065
0.620
0.4755
R8 75065
Add to Quote
.875
.058
0.759
0.5600
R8 87058
Add to Quote
1.000
.049
0.902
0.4970
R8 100049
Add to Quote
1.000
.058
0.884
0.5835
R8 100058
Add to Quote
1.000
.065
0.870
0.6491
R8 100065
Add to Quote
1.000
.083
0.834
0.8129
R8 100083
Add to Quote
1.125
.049
1.027
0.5631
R8 112049
Add to Quote
1.125
.058
1.009
0.6609
R8 112058
Add to Quote
1.125
.065
0.995
0.7359
R8 112065
Add to Quote
1.125
.083
0.959
0.9237
R8 112083
Add to Quote
1.250
.049
1.152
0.6285
R8 125049
Add to Quote
1.250
.058
1.134
0.7384
R8 125058
Add to Quote
1.250
.065
1.120
0.8226
R8 125065
Add to Quote
1.250
.083
1.084
1.0340
R8 125083
Add to Quote
1.250
.095
1.060
1.1720
R8 125095
Add to Quote
1.375
.049
1.277
0.6939
R8 137049
Add to Quote
1.375
.058
1.259
0.8158
R8 137058
Add to Quote
1.375
.065
1.245
0.9094
R8 137065
Add to Quote
1.375
.095
1.185
1.2990
R8 137095
Add to Quote
1.500
.058
1.384
0.8932
R8 150058
Add to Quote
1.500
.065
1.370
0.9962
R8 150065
Add to Quote
1.500
.083
1.334
1.2560
R8 150083
Add to Quote
1.500
.095
1.310
1.4260
R8 150095
Add to Quote
1.625
.065
1.495
1.0830
R8 162065
Add to Quote
1.625
.083
1.459
1.3670
R8 162083
Add to Quote
1.750
.065
1.620
1.1700
R8 175065
Add to Quote
1.750
.083
1.584
1.4780
R8 175083
Add to Quote
1.750
.095
1.560
1.6790
R8 175095
Add to Quote

Note: The Typical Mechanical Properties listed have been compiled from a variety of sources. Information is deemed reliable, but not guaranteed. Data is provided for information only, NOT FOR DESIGN PURPOSES.



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