THEIS Navigation


Product Descriptions

Furnished in pre-hardened condition, this material is tougher than BARTEMP-M (MARTINSITE), allowing the fabrication of parts where various shaping technologies, such as blanking, bending, drawing, stretching, extrusion, coining, or swaging might be involved. Because the material is already hardened, the following benefits can be realized:

a.     Additional steps to correct distortion inherent in part hardening are eliminated.

b.     Closer dimensional tolderances and improved finish

c.     Parts require no further heat treatment, saving on labor, utility costs and capital equipment.

  1. Lead times can be shortened.

This material is available in the following grades:

TRM-14 (AISI-1050), TRM-26 (AISI-1065), TRM-34 (AISI 1074), TRM-54 (AISI-1095).
TRM = Theis Raw Material

BARTEMP-B, made out TRM-14 and TRM-26, can undergo considerable shaping. However, BARTEMP-B, made out of TRM-34 and TRM-54, is suitable for lightly shaped components. For applications where good wear resistance is needed mostly along the edges of the material, it is recommended that higher grade BARTEMP-B be used.

TRM-14: 0.015-0.080" (.38-2.0 mm)
TRM-34: 0.015-0.080" (.38-2.0 mm)
TRM-26: 0.025-0.080" (.64-2.0 mm)
TRM-54: 0.025-0.080" (.64-2.0 mm)
Other sizes available upon request. TRM = Theis Raw Material

Theis offers hardened and tempered alloy steel for many applications. There are many grades and thicknesses available, with properties that include high wear resistance and high formability.

BARTEX is a specially heat treated, cold rolled high carbon steel. In its delivered condition, Bartex has a significantly higher tensile strength and yield to tensile ratio compared to hardened and tempered material of similar dimensions. The mechanical properties of Bartex are further enhanced by using a controlled strain aging heat treatment. Based on specific applications, strain aging process can be applied to the formed spring (as with constant force springs) or the material prior to fabrication of springs (as with power springs).

Bartex uses selected raw material with a low inclusion level, smooth and tight surface finish, and textured grain orientation resulting from heavy cold reduction and close control of metallurgical properties. This results in considerably improved fatigue properties, provided that good practices are used to control stress raisers.

Although plain carbon steels having a carbon range of 0.60% through 1.25% can be considered to make a textured material, the most suitable grade is an eutectoid plain carbon steel (carbon 80%) which is cold rolled to produce a 100% textured condition, and this is known as Bartex.

The following is some typical Bartex data:

Available thickness: 0.004 - 0.025" (.10 - .64 mm)
Available width: 0.093 - 12.0" (2.36 - 304.8 mm)

16" (406 mm) I.D. unless otherwise specified. Maximum O.D. 48" (1219 mm) unles otherwise specified.

Surface Finish:
Bright cold rolled, uncoated condition.

Surface Coating:
Parts made out of Bartex can be coated with metal or polymer provided the process temperature does not exceed 480F (249C).

Mechanical Properties:
The properties vary according to the rolling direction. Material transverse to rolling direction has the maximum ductility. The material is somewhat limited for forming.

Customers must do a low temperature strain age at 464F (240C) for 1/2 hour for optimum spring properties.

The following typical mechanical properties are obtained after a 464F (240C) stress relief:

Thickness Range: Less than .006" (0.15 mm)
Tensile: 340-380 KSI (2346-2621 N/mm2)
Vise Break: < 23 x Thickness>
% Elongation: < 1.0

Thickness Range: Less than 0.0098" - .006" (.25 - .15 mm)
Tensile: 320-355 KSI (2205-2448 N/mm2)
Modulus: 29-30 Million PSI
0.2%/UTS Ratio: 95-98%
0.010% Proof Stress: 310 KSI (2138 N/mm2)
% Elongation: < 1.0
Vise Break: Less than 22 x Thickness
15N Hardness: 15N 86-88

Thickness Range: Less than 0.025" - .010" (.64 - .25 mm)
Tensile: 270-330 KSI (1862-2276 N/mm2)
% Elongation: 3-1
Vise Break: 14-20 x Thickness
Ductility: Good - Fair

Other Grades of Textured Material:
Textured Materials using other carbon grades, such as TRM-26 (AISI 1065), TRM-34 (AISI 1074M), TRM-54 (AISI 1095), etc. are produced by Theis. Each textured material has its own unique properties and typical product applications.

Consult Theis Precision Steel USA for your specific application.

Theis uses electron beam welding technology extensively for welding high speed tool steel to high strength low alloy backing steel for the saw industry. The same technology is used in fabrications in these industries:

  • Electronics:
    Stainless steel and various nickel alloys.
  • Paper manufacturing:
    Monel to low alloy steel for doctor blade applications.
  • Textile Industries:
    Hardened high carbon steels of dissimilar thicknesses.
  • Scoring rules:
    Carbon steels of dissimilar shapes, which are difficult to fabricate using conventional shaping technology.

Electronic Applications:
Iron-nickel alloy is typically welded to AISI 304 type of stainless steel as tri-metal in various sizes. This welding requires a high degree of skill and precision.

Electron Beam Welding (BARCOMP) ...

Formability - the capacity of steel to sustain transverse or longitudinal bends without failure - depends on strip ductility.

Barco-Form is a spheroidized annealed product of Theis Precision Steel USA. Special annealing temperatures and rolling practices gives this steel excellent ductility.

Available edges for cold-rolled stripEdge
Selection of edge configuration is dependent upon part production processes and finished part contour. A number of edge shapes are available (see diagram below); of these, the most prevalent are No. 1 (square and round), No. 3 (slit) and No. 5 (deburred).

300 Broad Street, Bristol, Connecticut, U.S.A. 06010-6659
Tel: 860.585.6610 | FAX: 860.589.7411
e-mail: sales@theis-usa.com
ISO-9001-2008 Certified