청동
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청동 속성
- 물리적 상태
- 구형 분말
- 색상
- 브론즈 컬러
- 노출 한도
- ACGIH: TWA 0.2 mg/m3
OSHA: TWA 0.1 mg/m3; TWA 1 mg/m3
NIOSH: IDLH 100 mg/m3; TWA 1 mg/m3; TWA 0.1 mg/m3
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | N,F | ||
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위험 카페고리 넘버 | 52/53-50/53-11 | ||
안전지침서 | 61 | ||
유엔번호(UN No.) | UN 3077 9/PG 3 | ||
WGK 독일 | - |
청동 C화학적 특성, 용도, 생산
정의
Any of a group of copper-tin alloys usually containing 0.5–10% of tin. They are generally harder, stronger in compression, and more corrosion resistant than brass. Zinc is often added, as in gunmetal (2–4% zinc), to increase strength and corrosion-resistance; bronze coins often contain more zinc (2.5%) than tin (0.5%). The presence of lead improves its machining qualities.Some copper-rich alloys containing no tin are also called bronzes. Aluminum bronzes, for example, with up to 10% aluminum, are strong, resistant to corrosion and wear, and can be worked cold or hot; silicon bronzes, with 1–5% silicon, have high corrosion-resistance; beryllium bronzes, with about 2% beryllium, are very hard and strong.
공업 용도
The term bronze is generally applied to anycopper alloy that has as the principal alloyingelement a metal other than zinc or nickel. Originallythe term was used to identify copper–tinalloys that had tin as the only, or principal,alloying element. Some brasses are calledbronzes because of their color, or because theycontain some tin. Most commercial copper–tinbronzes are now modified with zinc, lead, silver,or other elements.Bronze is used in bearings, bushings, gears,valves, and other fittings both for water andsteam. Tin bronze, including statuary bronze,contains 2–20% tin; bell metal 15–25%; andspeculum metal up to 33%. Gun metal contains8–10% tin plus 2–4% zinc.
The properties of bronze depend on itscomposition and working. Phosphor bronze is tin bronze hardened and strengthened withtraces of phosphorus; it is used for fine tubing,wire springs, and machine parts. Lead bronzemay contain up to 30% lead; it is used for castparts such as low-pressure valves and fittings.Maganese bronze with 0.5 to 5% manganeseplus other metals, but often no tin, has highstrength. Aluminum bronze also contains no tin;its mechanical properties are superior to thoseof tin bronze, with up to 3% silicon, casts well,and can be worked hot or cold by rolling, forging,and similar methods. Beryllium bronze(also called beryllium copper) has about 2%beryllium and no tin. The alloy is hard andstrong and can be further hardened andstrengthened by precipitation hardening; it isone of the few copper alloys that responds toheat treatment, approaching three times thestrength of structural steel.
청동 준비 용품 및 원자재
원자재
준비 용품
청동 공급 업체
글로벌( 31)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
Zhengzhou Alfa Chemical Co.,Ltd | +8618530059196 |
sale04@alfachem.cn | China | 13363 | 58 |
LEAPCHEM CO., LTD. | +86-852-30606658 |
market18@leapchem.com | China | 43348 | 58 |
Aladdin Scientific | +1-+1(833)-552-7181 |
sales@aladdinsci.com | United States | 57511 | 58 |
Alfa Aesar | 400-6106006 |
saleschina@alfa-asia.com | China | 30132 | 84 |
Beijing Ouhe Technology Co., Ltd | 010-82967028 13552068683 |
2355560935@qq.com | China | 12439 | 60 |
Tianjin heowns Biochemical Technology Co., Ltd. | 400 638 7771 |
sales@heowns.com | China | 14443 | 57 |
Sigma-Aldrich | 021-61415566 800-8193336 |
orderCN@merckgroup.com | China | 51471 | 80 |
Alfa Chemistry | 1-516-6625404 |
support@alfa-chemistry.com | United States | 9171 | 60 |
Tianjin heowns Biochemical Technology Co., Ltd. | 400-638-7771 18920564737 |
sales@heowns.com | China | 20939 | 60 |
Wuhan Yuqing Jiaheng Pharmaceutical Co., Ltd | 027-83855382 15926260338 |
15926260338@163.com | China | 2037 | 58 |