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Product Descriptions
 BARTEMP-B® (BAINITE)
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.
- 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.
SIZE RANGES OF BAINITE:
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
 BARTEMP-M
® and THEIS-ITE ®
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®
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:
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Dimensions:
Available thickness: 0.004 - 0.025" (.10 - .64 mm)
Available width: 0.093 - 12.0" (2.36 - 304.8 mm)
Size:
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 480°F (249°C).
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 464°F (240°C) for 1/2 hour for optimum
spring properties.
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The following
typical mechanical properties are obtained after a 464°F (240°C) 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
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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 for your specific
application.
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 ELECTRON
BEAM WELDING (BAR-COMP ®)
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®)
...
 COLD
ROLLED and BARCO-FORM ®
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. Special annealing temperatures and
rolling practices gives this steel excellent ductility.
 Edge
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).
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