M43
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General Product Description
SSAB M43 is a micro-alloyed steel grade for quench hardening. Its fine-grain micro-structure allows critical workshop operations without risk for micro-cracking. The self-tempering properties prevent formation of hardening cracks. The degree of hardness and toughness that can be achieved after heat-treatment will provide end products with a wear- and shock resistance ratio that ensures longer lifetime.
Dimension Range
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| Delivery form | Thickness (mm) |
Width (mm) |
Length (mm) |
|---|---|---|---|
| Hot rolled coil | 3.0 - 12.0 1) | 870 - 1800 | — |
| Hot rolled slit coil | 3.0 - 12.0 1) | 100 - 755 | — |
| Hot rolled sheet | 3.0 - 12.0 1) | 1000 - 1800 | - 13000 |
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Delivery form
Hot rolled coil
Thickness
(mm)
(mm)
3.0 - 12.0 1)
Width
(mm)
(mm)
870 - 1800
Length
(mm)
(mm)
—
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Delivery form
Hot rolled slit coil
Thickness
(mm)
(mm)
3.0 - 12.0 1)
Width
(mm)
(mm)
100 - 755
Length
(mm)
(mm)
—
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Delivery form
Hot rolled sheet
Thickness
(mm)
(mm)
3.0 - 12.0 1)
Width
(mm)
(mm)
1000 - 1800
Length
(mm)
(mm)
- 13000
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1) Please check thickness/width combinations available.
Mechanical Properties (typical values)
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| Product type | Typical yield strength Rp0.2 (MPa) | Typical tensile strength Rm (MPa) | Typical Elongation A (%),not guaranteed | Typical Hardness (HRC), not guaranteed |
|---|---|---|---|---|
| As rolled | 440 | 660 | 16 | 18 |
| Water quenched | — | 2400 | — | 58 |
| Water quenched and tempered (175° C) | — | — | — | 56 |
| Oil quenched | — | 1750 | — | 52 |
| Oil quenched and tempered (175° C) | — | — | — | 51 |
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Comparison
Product type
As rolled
Typical yield strength Rp0.2 (MPa)
440
Typical tensile strength Rm (MPa)
660
Typical Elongation A (%),not guaranteed
16
Typical Hardness
(HRC), not guaranteed
(HRC), not guaranteed
18
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Product type
Water quenched
Typical yield strength Rp0.2 (MPa)
—
Typical tensile strength Rm (MPa)
2400
Typical Elongation A (%),not guaranteed
—
Typical Hardness
(HRC), not guaranteed
(HRC), not guaranteed
58
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Product type
Water quenched and tempered (175° C)
Typical yield strength Rp0.2 (MPa)
—
Typical tensile strength Rm (MPa)
—
Typical Elongation A (%),not guaranteed
—
Typical Hardness
(HRC), not guaranteed
(HRC), not guaranteed
56
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Product type
Oil quenched
Typical yield strength Rp0.2 (MPa)
—
Typical tensile strength Rm (MPa)
1750
Typical Elongation A (%),not guaranteed
—
Typical Hardness
(HRC), not guaranteed
(HRC), not guaranteed
52
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Product type
Oil quenched and tempered (175° C)
Typical yield strength Rp0.2 (MPa)
—
Typical tensile strength Rm (MPa)
—
Typical Elongation A (%),not guaranteed
—
Typical Hardness
(HRC), not guaranteed
(HRC), not guaranteed
51
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Bending radius
For further information, please consult your local SSAB contact person or contact SSAB’s Technical Customer Service.
Material Testing
A material test certificate Type 2.2 according to EN 10204 (chemical composition) is part of the delivery. A material test certificate according Type 3.1 according to EN 10204 (mechanical properties) can be provided by special agreement.
Impact Properties (typical values)
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| Product condition | Longitudinal test, typical impact energy, Charpy V 10x10 mm test specimen |
|---|---|
| As rolled | / 20.0 °C |
| Water quenched | 25 J / 20.0 °C |
| Water quenched and tempered (175° C) | 37 J / 20.0 °C |
| Oil quenched | 38 J / 20.0 °C |
| Oil quenched and tempered (175° C) | 39 J / 20.0 °C |
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Comparison
Product condition
As rolled
Longitudinal test, typical impact energy,
Charpy V 10x10 mm test specimen
Charpy V 10x10 mm test specimen
/ 20.0 °C
Product condition
Water quenched
Longitudinal test, typical impact energy,
Charpy V 10x10 mm test specimen
Charpy V 10x10 mm test specimen
25 J / 20.0 °C
Product condition
Water quenched and tempered (175° C)
Longitudinal test, typical impact energy,
Charpy V 10x10 mm test specimen
Charpy V 10x10 mm test specimen
37 J / 20.0 °C
Product condition
Oil quenched
Longitudinal test, typical impact energy,
Charpy V 10x10 mm test specimen
Charpy V 10x10 mm test specimen
38 J / 20.0 °C
Product condition
Oil quenched and tempered (175° C)
Longitudinal test, typical impact energy,
Charpy V 10x10 mm test specimen
Charpy V 10x10 mm test specimen
39 J / 20.0 °C
Chemical Composition (ladle analysis)
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| C (%) |
Si (%) |
Mn (%) |
S (max %) |
P (max %) |
Cr (max %) |
|---|---|---|---|---|---|
| 0.39 - 0.47 | 0.13 - 0.23 | 0.20 - 0.30 | 0.010 | 0.020 | 0.10 |
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C
(%)
(%)
0.39 - 0.47
Si
(%)
(%)
0.13 - 0.23
Mn
(%)
(%)
0.20 - 0.30
S
(max %)
(max %)
0.010
P
(max %)
(max %)
0.020
Cr
(max %)
(max %)
0.10
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SSAB M43 is micro-alloyed with Nb, Ti and V.
Carbon Equivalent
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| Delivery form | Hot rolled strip |
|---|---|
| Typical CET (%) | 0.53 |
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Delivery form
Typical CET (%)
Hot rolled strip
0.53
Tolerances
SSAB M43 is delivered with SSAB tolerances, which meet and exceed the requirements in EN 10051. Tighter tolerances are available upon request
Thickness
2/3 of EN 10051.
Width
Hot rolled coil: -0/+20mm (trimmed edges -0/+2 mm).
Hot rolled slit coil: -0/+1mm.
Hot rolled sheet: -0/+20mm (trimmed edges -0/+2 mm).
Length
-0/+20mm (only available for cut to length sheets).
Shape
According to EN 10051.
Flatness
≤ 6 mm/1 m ruler deviation (only valid for cut to length sheets).
Surface Properties
According to EN 10163-2 Class A, Subclass 3.
Delivery Conditions
Hot rolled coils, slit coils and sheet are delivered in as rolled (+AR) condition.
Surface Condition
Hot rolled coil products are available in non-pickled, pickled dry or pickled & oiled condition.
Fabrication and Other Recommendations
For information concerning fabrication, see SSAB´s brochures on www.ssab.com or consult Tech Support.
Appropriate health and safety precautions must be taken when bending, welding, cutting, grinding or otherwise working on the products.
Contact Information
www.ssab.com/contact