BS EN 10132-4 125Cr2 1.2002 Quenched Tempered Spring steel strip
Grade : 125Cr2
Number: 1.2002
Classification: Steel
Standard:
EN 10132-4: 2000 Cold rolled narrow steel strip for heat treatment.
Technical delivery conditions. Spring steels and other applications
Equivalent Materials
IS 120Cr35JIS SKS81MDIN 125Cr1DIN 1.2002DIN 125 Cr 1DIN 125Cr2AFNOR
125Cr2AFNOR XC130BS 125Cr2JIS SKS81EN 1.2002GOST 13Ch
125Cr2 1.2002 Quenched Tempered Strip Dimensions and tolerances
Thickness: 1 to 8 mm; Tolerances: +/- 0.008 to 0.11 mm
Width: 10 to 400 mm; Tolerances: +/- 0.15 to 0.60
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.
125Cr2 1.2002 Quenched Tempered Strip Chemical composition
name | number | C | Si | Mn | P max. | S max. | Cr | Mo max. | V | Ni |
125Cr2 | 1.2002 | 1,20 to 1,30 | 0.15 to 0,35 | 0,25 to 0,40 | 0,025 | 0,025 | 0,40 to 0,60 | 0,10 | - | max. 0,40 |
125Cr2 1.2002 Quenched Tempered Strip Mechanical properties
Steel designation | delivery condition |
annealed (+A) or annealed and skin passed (+LC) | cold rolled (+CR) | quenched and tempered (+QT) |
name | number | Proof strength max. Mpa | Tensile strength max. Mpa | Elongation % min. | HV max. | Tensile strength max. Mpa | HV max. | Tensile strength Mpa | HV |
125Cr2 | 1.2002 | 590 | 750 | 11 | 235 | - | - | 1 300 to 2 100 | 405 to 630 |
125Cr2 1.2002 Quenched Tempered Strip Mandatory information
The following information shall be supplied by the purchaser at the
time of enquiry and order to enable the supplier to comply with the
requirements of this European Standard:
a) the quantity to be delivered;
b) the designation of the product form (cold rolled narrow strip);
c) the number of the dimensional standard (EN 10140);
d) the dimensions and tolerances on dimensions and shape and, if
applicable, letters
denoting relevant special tolerances;
e)the number of this European Standard including the number of the
relevant part;
f) steel name or steel number
g) the delivery condition
h) if required, the type of inspection document in accordance with
EN 10204.
Hardened and Tempered Steel Strip (also known as hardened and
tempered High carbon steel strip or, hardened and tempered carbon
spring steel strip) is the basic raw material from which many
different components are made, substantially being spring-type
applications ranging from clutch plate segments to washers,
retractor springs and even to tree springs in riding saddles and
traditional clock springs. These strip products are a specialty of
the Company and considerable plant development has taken place in
recent years to facilitate a very wide range of dimensions,
mechanical properties and coil weights. Hardened and Tempered Steel
Strip gauges of between 0.10mm and 2.00mm can be processed and,
depending on the appropriate combination to suit the process
equipment, strip widths of between 4.76mm to 240mm are produced.
The facilities also allow up to 2000kg coils to be produced though
most are well below this, being governed by a very approximate
relationship of 100kg per 25mm of width.
Steel C125S, 1.1224 - implementation and specification
Non-alloy carbon spring steel is used for leaf springs and springs
with small cross-sections. It is characterized by low hardenability
and high carbon range in relation to C90S, C75S, C85S, and C67S
steel. Designed for spring elements requiring high elasticity and
hardness.It does not show corrosion resistance, and during heat
treatment it is exposed to decarburization and oxidation, which
means that the material should be protected against treatment using
a protective atmosphere. Poorly carried out treatment is associated
with reduced fatigue strength.Products made of C125S steel and its
equivalents are produced in the form of flat semi-finished products
- cold rolled strips, small-format thin sheets. Tempering of C125S
steel is carried out in oil, and after tempering the product shows
the structure of tempered martensite.Products made of C125S steel
are characterized by high tensile strength and yield strength.
Thermal improvement consists in austenitising the product at a
temperature of 780 - 860 and tempering at a temperature of 350 -
500 ℃.
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.
High-carbon spring steels are the most commonly used of all springs
materials. They will meet your spring steel material specification
in preference to others, despite being the least expensive. High
Carbon spring wires are readily available, easily worked, and most
popular. These materials are not satisfactory for high or low
temperatures or for shock or impact loading.We're ISO
9001:2008-certified spring manufacturer dedicated to supplying our
customers with high-performance spring products on time and at a
competitive price. Hard-drawn spring steel wire, or HDMB spring
wire, is manufactured using a cold-drawing process. During this
activity, the wire being worked is coated in oil and pulled through
one or more dies to reduce the wire width. One of the most
economical and versatile steel wire types, hard-drawn wire is
perfect for a range of general-purpose applications.
125Cr2 1.2002 Quenched Tempered Strip Delivery condition
Cold rolled narrow steel strip covered by EN10132-4 shall be
supplied in one of the following delivery conditions:
-annealed or annealed and skin passed(+A or +LC);
-cold rolled(+CR);
-quenched and tempered(+QT).
NOTE The delivery condition-annealed to achieve spheroidized
carbides(+AC)-may be agreed. In such cases, limits on
spheroidization and mechanical properties may also be agreed at the
time of enquiry and order.
125Cr2 1.2002 Quenched Tempered Strip Surface finish
The surface finish of cold rolled narrow steel strip shall be
bright as produced by rolling and annealing in a controlled
atmosphere.
The surface finishes of quenched and tempered cold rolled strip are
as follows:
1 grey/blue oxide finish:unpolished;
2 brigth tempered:unpolished
3 polished: obtained by fine grinding, abrasive brushing or other
processes;
4 polished and coloured:blue or yellow colour obtained by
oxidization by heat
treatment.
125Cr2 1.2002 Quenched Tempered Strip Inspection and testing
verification of the dimensions
visual examination of the surface quality
Chemical analysis
Extent of testing
Tensile and bending tests
Tolerances on shape