A100 steel alloy powder

Overview of A100 Steel Alloy Powder

A100 stainless steel contains high levels of nickel and manganese along with chromium, nitrogen and carbon to achieve outstanding low temperature toughness and ductility. It retains excellent impact strength and resistance to cryogenic embrittlement down to the temperature of liquid helium.

Key characteristics of A100 powder include:

• Excellent low temperature toughness and ductility
• High impact strength at cryogenic temperatures
• Good strength and hardness at room temperature
• Very good weldability and fabricability
• Resistant to cryogenic embrittlement
• 다양한 입자 크기 분류로 제공

A100 powder is designed for applications requiring thermal stability and toughness at extremely low temperatures such as liquid natural gas storage and transportation. This article provides a detailed overview of this alloy powder.

Chemical Composition of A100 Powder

The typical composition of A100 powder is:

요소	중량 %
니켈(Ni)	9-11%
망간(Mn)	12-14%
크로뮴(Cr)	14-16%
질소 (N)	0.15-0.30%
탄소(C)	0.08% 최대
실리콘(Si)	최대 1%
철(Fe)	균형

The key alloying elements like nickel, manganese, chromium along with nitrogen enable exceptional cryogenic temperature toughness and ductility in A100 steel.

Properties of A100 Powder

A100 powder possesses the following properties:

부동산	가치
밀도	7.9-8.1 g/cm3
용융점	1400-1450년대
열 전도성	12 W/mK
전기 저항률	0.80 Ã×´Î.cm
영률	190-210 GPa
푸아송 비	0.29-0.30
장력 강도 (Tensile strength)	620 MPa
항복강도	275 MPa
연장	35-40%
Impact Strength	50-120 J at -196¡«C

A100 maintains excellent ductility and impact strength even at the temperature of liquid helium making it suitable for the most demanding cryogenic applications.

Production Method for A100 Powder

A100 powder can be produced via:

• 가스 분무법고압 불활성 가스를 사용하여 용융 합금을 원자화하여 AM에 이상적인 미세한 구형 분말을 만듭니다.
• 물 분무?- High velocity water jet breaks up the molten stream into irregular powder particles. Lower cost but higher oxygen pickup.
• 기계적 합금?- 혼합 원소 파우더의 볼 밀링에 신터링 및 이차 분무가 뒤따른다.

Gas atomization allows excellent control over particle size distribution, shape, oxygen pickup and microcleanliness.

Applications of A100 Powder

Typical applications for A100 powder include:

• 첨가제 조형?- Used in laser powder bed fusion and binder jetting for cryogenic parts like valve bodies, pump components, storage tanks etc.
• 금속 사출 성형?- To manufacture small, complex cryogenic parts needing high ductility and impact strength.
• 열 스프레이 코팅?- Wire arc spray deposition to produce coatings providing cryogenic resistance.
• Cryogenic Vessels?- Liners, fittings, fasteners, forged and cast parts for storage, transportation of liquefied natural gas.
• Cryocoolers?- Powder forged compressor parts, regenerator housings requiring high cryogenic toughness.

Specifications of A100 Powder

A100 powder is available under various size ranges, shapes and grades:

• 입자 크기:AM 방식의 경우 10~45m, 용사 공정의 경우 최대 150m까지 가능합니다.
• 형태론:?Spherical, irregular and blended shapes. Smooth spherical powder provides optimal flow and packing density.
• 순수함:애플리케이션 요구 사항에 따라 상용 등급부터 고순도 등급까지 다양하게 제공됩니다.
• 산소 함량:?대부분의 애플리케이션에서 2000ppm 미만으로 유지됩니다.
• 유량:25초/50g 이상의 유속을 위해 맞춤화된 파우더.

Global Suppliers of A100 Powder

Some of the major global suppliers of A100 powder include:

• 산드빅 오스프리(영국)
• 호가나스(스웨덴)
• Praxair (미국)
• Oerlikon Metco (Switzerland)
• 에라스틸(프랑스)
• CNPC 파우더 (중국)

These companies produce various grades of A100 powder tailored for additive manufacturing, thermal spray, powder metallurgy and other cryogenic applications.

Pricing of A100 Powder

A100 powder is priced higher than austenitic grades due to complex chemistry:

• 수량?- $50-100 per kg for bulk orders above 500 kg. Smaller quantities are priced higher.
• 품질?- 제어된 특성을 가진 고순도 구형 분말은 프리미엄 가격을 요구합니다.
• 공급자대규모 글로벌 공급업체는 더 많은 물량으로 인해 경쟁력 있는 가격을 제공합니다.
• 지리지역마다 가격이 다르며 유럽과 북미는 고가 시장입니다.

For critical cryogenic applications, buyers should focus on quality rather than lowest cost while procuring A100 powder.

Storage and Handling of A100 Powder

A100 powder requires controlled storage and handling:

• 산화를 방지하기 위해 밀폐된 용기에 불활성 기체를 채워서 저장
• 먼지 폭발 위험을 최소화하기 위해 미세 분말이 쌓이지 않도록 합니다.
• Use proper grounding, ventilation, PPE when handling powder
• Prevent contact with moisture, acids, strong oxidizers
• 공급업체 SDS의 권장 안전 수칙을 따르세요.

Inert gas glove box techniques are preferred when handling reactive alloy powders like A100.

Inspection and Testing of A100 Powder

Key quality control tests performed on A100 powder:

• OES 또는 XRF를 사용하여 화학 분석을 수행하여 구성이 특정 한계 내에 있는지 확인
• ASTM B822 표준에 따른 입도 분포
• SEM 영상을 통한 형태 분석
• ASTM B213 표준에 따라 측정된 분말 유량
• 헬륨 피크노미터에 의한 밀도 측정
• ICP-MS를 이용한 불순물 검사
• X-선 회절을 통한 미세 구조 특성 분석

Thorough testing ensures the powder meets the required chemical, physical and microstructural characteristics for cryogenic applications.

Comparison Between A100 and 304L Stainless Steel Powders

A100 and 304L stainless steel powders compared:

파라미터	A100	304L
유형	오스테나이트	오스테나이트
Ni 콘텐츠	9-11%	8-12%
Low temperature toughness	훌륭함	가난
내식성	보통	훌륭함
비용	높은	더 낮게
용접성	아주 좋아요	훌륭함
신청	Cryogenic parts	자동차, 가전 제품

A100 offers exceptional low temperature toughness whereas 304L provides better overall corrosion resistance at lower cost.

A100 Powder FAQs

Q: How is A100 steel alloy powder produced?

A: A100 powder is commercially produced using gas atomization, water atomization and mechanical alloying followed by sintering. Gas atomization provides the best control of characteristics.

Q: What are the main applications of A100 powder?

A: The major applications include additive manufacturing, thermal spray coatings, metal injection molding, and powder metallurgy of cryogenic parts needing high ductility and impact strength at extremely low temperatures.

Q: What is the typical A100 powder size used for binder jetting AM?

A: For binder jetting process, the common A100 powder size range is 20-45 microns with spherical morphology to enable good powder packing and binder infiltration.

Q: Does A100 powder require any special handling precautions?

A: Yes, it is recommended to handle A100 powder carefully under controlled humidity and inert atmosphere using proper grounding, ventilation and PPE.

Q: Where can I purchase A100 powder suitable for cryogenic storage vessels?

A: For cryogenic applications needing high toughness, A100 powder can be purchased from leading manufacturers including Sandvik Osprey, Hoganas, Praxair, Oerlikon Metco, and Erasteel.