HEAT TREATMENT - Carrs Tool Steels Ltd.€¦ · MS (Mild Steel) (S355 / ST52) Typical Analysis...
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Carrs Tool Steels Ltd. Steelbright Works, Coneygree Road, Tipton, West Midlands DY4 8XQ, UK 0121 522 6789 0121 522 6770 [email protected] www.carrs-tool.co.uk t f e Typical Analysis Colour Code Annealing Soak thoroughly to 710ºC. Cool slowly in the furnace. Stress Relieving Heat uniformly to 300ºC. Hardening & Tempering Thoroughly warm tools or components before charging. Hardening Temperature 840ºC. After warming pre-heat at 400 / 500ºC and soak thoroughly. Raise the heat slowly and uniformly to 840ºC. Quenching Quench in oil or water. Tools / Components should be tempered immediately whilst still hand warm. Tempering Temper according to your hardness requirements. Normalising Normalising temperature 840 – 870ºC QBR 060 A 47 (EN8, 1.1730, C45) C 0.45 P 0.030 max Mn 0.70 S 0.030 max Si 0.25 Mauve Brown HEAT TREATMENT Characteristics QBR is suitable for welding. Supplied in the rolled condition, QBR has high toughness, tensile strengths can vary, but are usually 500 – 800N/mm2. QBR can be flame or induction hardened to produce a good surface hardness up to 57HRc. Stock Carrs QBR is stocked in a range of flat plate sections, and can be supplied cut and ReadyMilled to your requirements. Flame cut and normalised profiles can also be supplied. QBR is also available in larger sizes, supplied from forged machined blocks. Typical Applications QBR is widely used in many general engineering applications that require better properties than mild steel. • Machine components • Guide rails • Base plates • Tool frames • Backing plates f e 55 50 45 40 35 100 150 200 250 300 350 400 450 QBR TEMPERING CHART Degrees ºC Hardness HRc 150ºC - 54HRc 200ºC - 52HRc 250ºC - 49HRc 300ºC - 45.5HRc
Transcript of HEAT TREATMENT - Carrs Tool Steels Ltd.€¦ · MS (Mild Steel) (S355 / ST52) Typical Analysis...
Carrs Tool Steels Ltd. Steelbright Works, Coneygree Road, Tipton, West Midlands DY4 8XQ, UK
0121 522 6789 0121 522 6770 [email protected]
www.carrs-tool.co.uk
t f e
Typical Analysis
Colour Code
AnnealingSoak thoroughly to 710ºC. Cool slowly in the furnace.
Stress RelievingHeat uniformly to 300ºC.
Hardening & TemperingThoroughly warm tools or components before charging.
Hardening Temperature 840ºC.
After warming pre-heat at 400 / 500ºC and soak
thoroughly.
Raise the heat slowly and uniformly to 840ºC.
QuenchingQuench in oil or water.
Tools / Components should be tempered immediately
whilst still hand warm.
TemperingTemper according to your hardness requirements.
NormalisingNormalising temperature 840 – 870ºC
QBR060 A 47 (EN8, 1.1730, C45)
C 0.45 P 0.030 max
Mn 0.70 S 0.030 max
Si 0.25
Mauve Brown
HEAT TREATMENT
CharacteristicsQBR is suitable for welding. Supplied in the rolled
condition, QBR has high toughness, tensile strengths
can vary, but are usually 500 – 800N/mm2. QBR can be
flame or induction hardened to produce a good surface
hardness up to 57HRc.
StockCarrs QBR is stocked in a range of flat
plate sections, and can be supplied cut and ReadyMilled
to your requirements. Flame cut and normalised profiles
can also be supplied. QBR is also available in larger sizes,
supplied from forged machined blocks.
Typical ApplicationsQBR is widely used in many general engineering
applications that require better properties than
mild steel.
• Machine components
• Guide rails
• Base plates
• Tool frames
• Backing plates
f e
55
50
45
40
35100 150 200 250 300 350 400 450
QBR TEMPERING CHART
Degrees ºC
Hard
ness
HRc
150ºC - 54HRc
200ºC - 52HRc
250ºC - 49HRc
300ºC - 45.5HRc
Carrs Tool Steels Ltd. Steelbright Works, Coneygree Road, Tipton, West Midlands DY4 8XQ, UK
0121 522 6789 0121 522 6770 [email protected]
www.carrs-tool.co.uk
t f e
MS (Mild Steel)(S355 / ST52)
Typical Analysis
Colour Code
Mild Steel (S355) is not particularly suited to
hardening, although it can be subjected to limited
heat treatment processes such as case hardening.
As a rolled unalloyed low carbon steel the main
characteristics of mild steel are it’s mechanical
properties such as tensile strength and yield strength.
Typical Mechanical propertiesTensile strength 470 – 630 N/mm2
Yield Strength 355 N/mm2
AnnealingSoak thoroughly 650 - 700ºC. Cool slowly in
the furnace.
Normalising
Normalising temperature 860 – 890ºC
C 0.2 max P 0.025 max
Mn 1.6 max S 0.025 max
Si 0.55 max
Mauve Dark Blue
HEAT TREATMENT
CharacteristicsMild Steel is an unalloyed low carbon steel, with good
machinability. Supplied in the rolled condition, with an
average minimum yield of 355 N/mm2.
StockCarrs Mild Steel is stocked in a range of flat plate
sections, and can be supplied cut and ReadyMilled to
your requirements.
Typical ApplicationsMild Steel is widely used in many general engineering
applications.
