ASTM A684 1074 Cold Rolled Steel Strip
1074 Carbon steels are designated by AISI four-digit numbers. They
contain only carbon as the major alloying element. 1.2% of
manganese, and 0.4% of silicon are present in these steels. They
also contain chromium, nickel, copper, aluminium, and molybdenum in
small amount. Impurities such as sulfur and phosphorous are also
found in these steels.
Dimensions and tolerances
Thickness: 0.1 to 5 mm; Tolerances: +/- 0.008 to 0.11 mm
Width: 10 to 400 mm; Tolerances: +/- 0.15 to 0.60
*accept nonstandard size, please contact with our sales.
Our Advantage
1. Precise thickness, uniform hardness. Bright surface, smooth
edge.
2. High flatness of board surface, high performance after multiple
bending.
3. No cracking after stamping, and the quality is stable. And we
provide Self-Inspection Reports and Raw-Material Test Certificates.
4. Professional anti-rust protective packaging. On time delivery,
competitive price.
5. Large stock available, no MOQ requirement
1074 Cold Rolled Steel Strip Chemical Composition
Steel Designation No. | Carbon | Manganese | Phosphorus, max | Sulfur, max |
1074 | 0.70 to 0.80 | 0.50 to 0.80 | 0.030 | 0.035 |
1074 Cold Rolled Steel Strip Manufacture Condition:
1 The strip shall be furnished cold rolled spheroidized annealed,
soft annealed, intermediate hardness, or full hard, as specified.
2 Intermediate hardness may be obtained by either rolling the strip
after final annealing or by varying the annealing treatment, or
both.
3 Pinch Pass一Spheroidized annealed and annealed material may be
pinch rolled after the final anneal to improve flatness, uniformly
oil, modify surface, obtain proper mechanical properties, and
minimize stretcher strains if required by the purchaser.
The surface finish of Hardened and Tempered Steel Strip products is
not too critical in general engineering applications where the
normal blue-black (also known as blue-grey) oxidized finish from
the heat treatment is satisfactory. By control of the atmospheres
in the furnaces non-oxidised surfaces can also be produced, on a
selected basis, and alternatively, steels can be satin or bright
polished were needed, these finishes being as much for cosmetic
reasons as for engineering purposes.
We hold expertise in providing a qualitative range of Blue Tempered
Steel Strips to our clients at affordable prices. Owing to features
like high efficiency, optimum performance and durable finish
standards they are highly demanded in the market. Our ranges of
these are used in various industries like automobile, cable and
electronic industries. Clients can avail these strips in various
dimensions with thickness as per their own requirement. We supply
these at market leading prices. Known for its durability and
rigidity, blue spring steel is often used in the production of
clips, blades/knives, springs, coiled springs, washers, saw blades,
trowels, scrapers, doctor blades for pulp mill & printing
applications, spring clamps, antennas, lock picks, clock hands,
grass/grain cutting tools, and brake discs.
1074 Cold Rolled Steel Strip Grain Size:
Unless otherwise specified, the steel strip shall be manufactured
to a fine grain (austenitic and ferritic) practice.
Pearlite is the normal structure of cold rolled high- carbon strip
unless it has had an intermediate anneal.
1074 Cold Rolled Steel Strip Decarburization:
1 When specified, the steel strip shall have a maximum permissible
depth of complete plus partial decarburization of 0.001 in, [0.025
mm] or 1.5 % of the thickness of the strip, whichever is greater,
except that strip less than 0.011 in. [0.279 mm] thick shall show
no complete decarburization.
2 Annealed is mostly a spheroidized structure, but may contain some
vestiges of pearlite.
3 Spheroidized annealed is essentially free of pearlite.
4 At least one specimen shall be taken froin each lot for
microexami nation. The specimens shall be prepared for microscopic
examination in accordance with Guide E3.
cold-rolled high-carbon strip in coils or cut lengths is classified
as product that is 0.3000 in. [7.6 mm] or less in thickness and
over 1/2 to 23 15/16 in. [12.5 to 600 mm] in width, inclusive.
Strip tolerance products may be available in widths wider than 23
15/16 in. (600 mm) by agreement between purchaser and supplier;
however, such products are technically classified as cold-rolled
sheet. The maximum of the specified carbon range is over 0.25 to
1.35 %, inclusive.
1074 Cold Rolled Steel Strip Finish
Surface—The strip shall be furnished with a No. 2 Regular Bright or
No. 1 Matte (Dull) finish, as specified.
Oiling—The strip shall be furnished oiled or dry, as specified.
1074 Cold Rolled Steel Strip Edges
Edges—Cold-rolled carbon steel strip shall be supplied with one of
the following edges as specified:
No. I—A prepared edge of a specified contour (round or square) that
is produced when a very accurate width is required or when an edge
condition suitable for electroplating is required, or both.
No. 2—A natural mill edge carried through the cold rolling from the
hot-rolled strip without additional processing of the edge.
No. 3一An approximately square edge produced by slitting on which
the burr is not eliminated. This is produced when the edge
condition is not a critical requirement for the finished part.
Normal coiling or piling does not provide a definite positioning of
the slitting burr.
No. 4—An approximately rounded edge. This edge is produced when the
width tolerance and edge condition are not as exacting as for No. 1
edges.
No. 5—An approximately square edge produced from slit edge material
on which the burr is eliminated.
No. 6—An approximately square edge. This edge is produced when the
width tolerance and edge condition are not as exacting as for No. I
edges.
Skived Custom-shaped edges produced by mechanical edge shaving with
special tooling.
Equivalent Materials
DIN 1.0614DIN D 75-2DIN C76DAFNOR C76DBS C76DAISI 1074AISI 1075SAE
1074SAE 1075JIS SWRH77BEN C76DEN 1.0614ISO C76DGOST 75GB C76DGB
U53762GB/T C76DGB/T U53762ASTM Grade 1074UNS G10740UNS G10750DIN
1.1252DIN D 78-3DIN C78D2AFNOR C78D2BS C78D2JIS SWRS77EN C78D2EN
1.1252ISO C78D2GB/T YL77GB/T U53777GB/T U53778GB/T C78D2DIN
1.1253DIN D 75-3DIN C76D2AFNOR C76D2BS C76D2JIS SWRS75EN C76D2EN
1.1253ISO C76D2GB/T C76D2DIN 1.9614DIN SAE 1074EN 1.9614DIN
1.0605DIN C75AFNOR C75BS 80CSBS 80HSJIS S75CMEN 42EN 1.0605ISO
CS75GB/T 75GB/T U20752IS 80C6DIN 1.1248DIN Ck75DIN C75SAFNOR
C75SAFNOR C75RRAFNOR XC75BS 70CSBS 70HSBS 060A78BS C75SBS CS70BS
80AISI 1070AISI 1078SAE 1070SAE 1078EN C75SEN 1.1248GOST 75AASTM
Grade 1070MUNS G10700UNS G10780
It is furnished in the following types as specified:
1 Soft spheroidized annealed high-carbon steel is intended for
applications requiring maximum cold forming. It is normally
produced to give the lowest maximum Rockwell hardness for each
grade.
2 Soft annealed high-carbon steel is intended for applications
requiring moderate cold forming. It is produced to a maximum
Rockwell hardness.
3 Intermediate hardness high-carbon steel is intended for
applications where cold forming is slight or a stiff, springy
product is needed, or both. It is produced to specified Rockwell
hardness ranges, the maximum being higher than obtained for the
annealed type.
4 Full hard high-carbon steel is intended for flat applications. It
is produced to minimum Rockwell hardness requirements, which vary
with grade, microstructure and gauge. Full hard can be produced
with either a pearlitic or spheroidized microstructure or a mixture
of both. The minimum hardness should be established between the
consumer and the producer.
1074 Cold Rolled Steel Strip Finish
Cold-rolled carbon steel strip shall be supplied with the following
finishes.
1 Number 1 or Matte (Dull) 一Finish without luster, produced by
rolling on rolls roughened by mechanical or chemical means. This
finish is especially suitable for lacquer or paint adhesion, and is
beneficial in aiding drawing operations by reducing the contact
friction between the die and the strip.
2 Number 2 (Regular Bright) Finish—Finish produced by rolling on
rolls having a moderately smooth finish. It is less suitable that
No. 1 (matte) finish for cold forming and may be applicable for
certain types of plating.
1074 Cold Rolled Steel Strip Ordering Information
Orders for material under this specification shall include the
following information:
ASTM designation and date of issue.
Name, type, and steel grade number.
Hardness (if intermediate or restricted hardness is specified).
Decarburization (if required).
Application.
Dimensions.
Coil size requirements.
Edge (indicate No. 1 round, square, and so forth).
Finish (indicate and specify).
Conditions (specify whether material is oiled or dry).
Package (bare coils, skid, and so forth).
Cast or heat (formerly ladle) analysis report (if required).
1074 Cold Rolled Steel Strip Inspection and testing
a suitable frequency of verification of the dimensions of the
products;
an adequate intensity of visual examination of the surface quality
of the products;
an appropriate frequency and type of test to ensure that the
correct grade of steel is used.
Extent of testing
Tensile and bending tests
Tolerances on shape