CN103882328A - Low-alloy material with high strength and high toughness - Google Patents
Low-alloy material with high strength and high toughness Download PDFInfo
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- CN103882328A CN103882328A CN201410063066.5A CN201410063066A CN103882328A CN 103882328 A CN103882328 A CN 103882328A CN 201410063066 A CN201410063066 A CN 201410063066A CN 103882328 A CN103882328 A CN 103882328A
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Abstract
The invention discloses a low-alloy material with high strength and high toughness. The material comprises the following elements in percentage by weight: 0.3-0.4% of C, less than 0.60% of Si, 0.8-1.5% of Mn, 0.8-1.2% of Cr, 1.2-1.5% of Ni, 0.3-0.4% of Mo, less than 0.01% of S, less than 0.015% of P, less than 0.08% of Al, 0.01-0.03% of Zr, less than 0.015% of N, less than 0.1% of Cu, less than 0.02% of V and the balance of Fe and unavoidable impurities. By adopting the invention, the content of carbon in steel is reduced as much as possible, and the total content of alloys in steel is about 5%; Cr, Ni and Mn in steel are mainly used for increasing the hardening capacity of steel so as to ensure that larger parts can acquire martensitic structures under proper cooling conditions; Mo and V in steel are mainly used for increasing the tempering resistance and the grain refinement capacity of steel.
Description
Technical field
The invention belongs to the manufacture field of alloy material, be specifically related to a kind of low-alloy high-strength and high-toughness material.
Background technology
High-strength low-alloy steel is one of most important engineering materials, is widely used among the machinofacture such as petroleum natural gas pipeline, ocean platform, shipbuilding, bridge structure, pressurized vessel, building structure.Its intensity, toughness are as the most important performance of low alloy steel, and high-strength low-alloy steel to a great extent, also needs dependence on import product at present, expensive; Therefore the comprehensive mechanical performance and the use properties that in maintaining lower manufacturing cost, improve significantly steel, seem particularly important.
Summary of the invention
The object of the present invention is to provide a kind of low-alloy high-strength and high-toughness material, it possesses good obdurability, intensity, and manufacturing cost is reduced simultaneously.
Technical scheme of the present invention is, a kind of low-alloy high-strength and high-toughness material, following (weight percent) C0.3%～0.4% of its composition, Si<0.60%, Mn0.8%～1.5%, Cr0.8%～1.2%, Ni1.2～1.5, Mo0.3%～0.4%, S<0.01%, P<0.015%, AL<0.08%, Zr0.01%～0.03%, N<0.015%, Cu<0.1%, V<0.02%; Surplus is Fe and inevitable impurity.
Further, a kind of low-alloy high-strength and high-toughness material, following (weight percent) C0.33%～0.35% of its composition, Si<0.50%, Mn0.9%～0.98%, Cr0.9%～0.97%, Ni1.3%～1.36%, Mo0.32%～0.35%, S<0.01%, P<0.015%, AL<0.04%, Zr0.015%～0.025%, N<0.013%, Cu<0.1%, V<0.02%; Surplus is Fe and inevitable impurity.
Further, a kind of low-alloy high-strength and high-toughness material, following (weight percent) C0.34% of its composition, Si0.45%, Mn0.96%, Cr0.95%, Ni1.35%, Mo0.33%, S<0.01%, P<0.015%, AL0.045%, Zr0.02%, N<0.01%, Cu<0.1%, V0.01%; Surplus is Fe and inevitable impurity.
Beneficial effect: carbon content in the reduction steel that the present invention tries one's best, steel interalloy element total amount is about 5% left and right, Cr, Ni and the Mn Main Function in steel is the hardening capacity that improves steel, to ensure that larger part obtains martensitic stucture under suitable cooling conditions, the Main Function of Mo and V is tempering resistance and the crystal grain thinning etc. that improves steel.
Embodiment
Below in conjunction with Concrete facts example, the present invention will be further described.
Embodiment 1
A kind of low-alloy high-strength and high-toughness material, following (weight percent) C0.3%～0.4% of its composition, Si<0.60%, Mn0.8%～1.5%, Cr0.8%～1.2%, Ni1.2～1.5, Mo0.3%～0.4%, S<0.01%, P<0.015%, AL<0.08%, Zr0.01%～0.03%, N<0.015%, Cu<0.1%, V<0.02%; Surplus is Fe and inevitable impurity.
Embodiment 2
A kind of low-alloy high-strength and high-toughness material, following (weight percent) C0.33%～0.35% of its composition, Si<0.50%, Mn0.9%～0.98%, Cr0.9%～0.97%, Ni1.3%～1.36%, Mo0.32%～0.35%, S<0.01%, P<0.015%, AL<0.04%, Zr0.015%～0.025%, N<0.013%, Cu<0.1%, V<0.02%; Surplus is Fe and inevitable impurity.
Embodiment 3
A kind of low-alloy high-strength and high-toughness material, following (weight percent) C0.34% of its composition, Si0.45%, Mn0.96%, Cr0.95%, Ni1.35%, Mo0.33%, S<0.01%, P<0.015%, AL0.045%, Zr0.02%, N<0.01%, Cu<0.1%, V0.01%; Surplus is Fe and inevitable impurity.
The low-alloy high-strength and high-toughness material that above-described embodiment 1,2,3 provides, its performance perameter after testing, tensile strength: 1250Mpa; Surrender: 1050Mpa; Relative reduction in area: 35%; Unit elongation: 16%;-40 DEG C of low-temperature impact >25J.
The intensity that product of the present invention improves greatly, has splendid moulding and low temperature impact properties, and product can obtain good use in cold district.
Claims (3)
1. a low-alloy high-strength and high-toughness material, following (weight percent) C0.3%～0.4% of its composition, Si<0.60%, Mn0.8%～1.5%, Cr0.8%～1.2%, Ni1.2～1.5, Mo0.3%～0.4%, S<0.01%, P<0.015%, AL<0.08%, Zr0.01%～0.03%, N<0.015%, Cu<0.1%, V<0.02%; Surplus is Fe and inevitable impurity.
2. a kind of low-alloy high-strength and high-toughness material according to claim 1, it is characterized in that: following (weight percent) C0.33%～0.35% of its composition, Si<0.50%, Mn0.9%～0.98%, Cr0.9%～0.97%, Ni1.3%～1.36%, Mo0.32%～0.35%, S<0.01%, P<0.015%, AL<0.04%, Zr0.015%～0.025%, N<0.013%, Cu<0.1%, V<0.02%, surplus is Fe and inevitable impurity.
3. a kind of low-alloy high-strength and high-toughness material according to claim 2, is characterized in that: following (weight percent) C0.34% of its composition, Si0.45%, Mn0.96%, Cr0.95%, Ni1.35%, Mo0.33%, S<0.01%, P<0.015%, AL0.045%, Zr0.02%, N<0.01%, Cu<0.1%, V0.01%; Surplus is Fe and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063066.5A CN103882328A (en) | 2014-02-25 | 2014-02-25 | Low-alloy material with high strength and high toughness |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410063066.5A CN103882328A (en) | 2014-02-25 | 2014-02-25 | Low-alloy material with high strength and high toughness |
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| CN103882328A true CN103882328A (en) | 2014-06-25 |
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| CN201410063066.5A Pending CN103882328A (en) | 2014-02-25 | 2014-02-25 | Low-alloy material with high strength and high toughness |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174896A (en) * | 1996-04-29 | 1998-03-04 | 克罗索·洛利工业责任有限公司 | Low alloy steel for manufacture of moulds for plastics |
| CN101497964A (en) * | 2009-03-02 | 2009-08-05 | 暨南大学 | High hardness and toughness low alloy abrasion resistant steel and use thereof |
| CN102330030A (en) * | 2011-10-14 | 2012-01-25 | 天津钢管集团股份有限公司 | Seamless steel pipe with diameter of between 559 and 711mm for vehicular high-pressure gas cylinder and production method thereof |
| CN103562427A (en) * | 2011-05-25 | 2014-02-05 | 新日铁住金株式会社 | Hot-rolled steel sheet and process for producing same |
-
2014
- 2014-02-25 CN CN201410063066.5A patent/CN103882328A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174896A (en) * | 1996-04-29 | 1998-03-04 | 克罗索·洛利工业责任有限公司 | Low alloy steel for manufacture of moulds for plastics |
| CN101497964A (en) * | 2009-03-02 | 2009-08-05 | 暨南大学 | High hardness and toughness low alloy abrasion resistant steel and use thereof |
| CN103562427A (en) * | 2011-05-25 | 2014-02-05 | 新日铁住金株式会社 | Hot-rolled steel sheet and process for producing same |
| CN102330030A (en) * | 2011-10-14 | 2012-01-25 | 天津钢管集团股份有限公司 | Seamless steel pipe with diameter of between 559 and 711mm for vehicular high-pressure gas cylinder and production method thereof |
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Application publication date: 20140625 |