High-Performance C95500 Nickel Aluminum Bronze Tubes: Comprehensive Material Standards Analysis

1. Introduction to C95500 Nickel Aluminum Bronze

C95500 is a premium grade nickel aluminum bronze alloy known for its exceptional strength, corrosion resistance, and reliability in demanding applications. This comprehensive analysis covers all aspects of material standards and specifications for C95500 tubes.

2. Chemical Composition Standards

2.1 Primary Composition Requirements

要素	構成範囲(%)	Preferred Range (%)	Effects on Properties
銅	78.0 – 82.0	80.0 – 81.0	Base metal, provides matrix structure
ニッケル(Ni)	3.0 – 5.5	4.0 – 5.0	Improves strength and corrosion resistance
アルミニウム(Al)	8.2 – 9.5	8.5 – 9.0	Forms strengthening precipitates
鉄(Fe)	3.5 – 4.5	3.8 – 4.2	Enhances grain refinement
マンガン(Mn)	0.8 – 1.5	1.0 – 1.3	Improves deoxidation

2.2 Trace Element Limitations

要素	Maximum Limit (%)	Critical Control Point
シリコン（Si）	0.10	Affects fluidity
鉛(Pb)	0.03	Toxicity control
亜鉛(Zn)	0.20	Dezincification resistance
リン(P)	0.05	Grain refinement
硫黄(S)	0.05	Impurity control

3. Mechanical Properties Standards

3.1 Room Temperature Mechanical Properties

財産	最小	最大	試験方法
引張強さ(MPa)	650	790	ASTM E8
降伏強さ(MPa)	280	450	ASTM E8
伸長（％）	15	–	ASTM E8
Reduction in Area (%)	20	–	ASTM E8
硬度（ブリネル）	170	210	ASTM E10
Impact Strength (Joules)	34	–	ASTM E23

3.2 Elevated Temperature Properties

温度(℃)	引張強さ(MPa)	降伏強さ(MPa)	伸長（％）
20	720	350	15
100	680	330	16
200	630	300	18
300	550	270	20
400	450	230	22
500	350	180	25

4. Physical Properties Standards

4.1 Basic Physical Properties

財産	価値	単位	試験方法
密度	7.58	g/cm3	ASTM B311
溶解範囲	1045-1080	℃	DSC Analysis
比熱	0.377	kJ/kg・K	ASTM E1269
熱伝導率	45	W/m・K	ASTM E1530
電気抵抗率	12.8	μΩ・cm	ASTM B193
透磁率	1.05	–	ASTM A342

4.2 Thermal Properties

財産	Temperature Range (°C)	価値	単位
熱膨張係数	20～100	16.2	μm/m·K
熱膨張係数	20～200	16.8	μm/m·K
熱膨張係数	20～300	17.3	μm/m·K
比熱容量	20～100	0.377	kJ/kg・K
Thermal Diffusivity	20～100	15.8	mm²/s

5. Dimensional Standards

5.1 Standard Tube Dimensions

呼び外径(mm)	Wall Thickness Options (mm)	標準長さ(m)	Weight (kg/m)
15.88 – 25.4	1.65, 2.11, 3.38	3、6	0.6 – 1.8
31.75 – 50.8	2.11, 3.18, 4.78	3、6	1.5 – 5.2
63.5 – 101.6	3.18, 4.78, 6.35	3、6	4.8 – 15.3
114.3～219.1	4.78, 6.35, 12.7	3、6	13.2 – 65.8
273.0 – 406.4	6.35, 12.7, 19.1	3、6	41.5 – 182.6

5.2 Manufacturing Tolerances

寸法	サイズ範囲	許容範囲	検査方法
外径	≤ 50mm	±0.25mm	Micrometer
外径	> 50mm	±0.5%	Caliper
肉厚	All	±10%	Ultrasonic
長さ	All	+3mm、-0mm	Tape Measure
真直度	All	1.5mm/m	Straightedge
楕円形	All	1% of OD	Dial Gauge

6. Surface Finish Requirements

6.1 Surface Finish Classifications

クラス	Ra Value (μm)	応用	検査方法
Class A	0.4 – 0.8	Critical Flow	Profilometer
Class B	0.8 – 1.6	General Hydraulic	Visual + Measurement
Class C	1.6 – 3.2	Standard Industrial	Visual
Class D	3.2 – 6.3	Non-Critical	Visual

6.2 Surface Defect Tolerances

Defect Type	Maximum Allowable Depth	Maximum Length	Repair Method
Scratches	0.1mm	25mm	研磨
Pits	0.2mm	3mm	Not Required
Dents	Not Allowed	–	Rejection
Tool Marks	0.05mm	10mm	研磨

7. Quality Control Standards

7.1 Required Testing Procedures

テストの種類	標準	頻度	Acceptance Criteria
化学分析	ASTM E478	ヒートごとに	Within Composition Limits
引張試験	ASTM E8	ロットごと	Meet Mechanical Properties
硬さ試験	ASTM E10	ロットごと	Within Specified Range
超音波検査	ASTM E213	100%	No Reportable Indications
静水圧試験	ASTM E498	100%	No Leakage
Visual Inspection	ASTM B666	100%	No Visual Defects

7.2 Non-Destructive Testing Requirements

NDT Method	標準	Coverage	Acceptance Level
Ultrasonic	ASTM E213	100%	Class 1
Penetrant	ASTM E165	As Required	Level 2
Radiographic	ASTM E1742	As Required	Level 2
Eddy Current	ASTM E243	Optional	Class 1

8. Heat Treatment Standards

8.1 Heat Treatment Parameters

プロセス	Temperature Range (°C)	Time (Hours)	Cooling Method
溶体化焼鈍	870-900	1-2	Water Quench
応力緩和	350-400	2-3	Air Cool
Age Hardening	450-500	2-4	Air Cool
Homogenization	750-800	4-6	Furnace Cool

8.2 Post-Heat Treatment Properties

財産	As-Cast	Solution Annealed	Age Hardened
引張強さ(MPa)	550-650	650-750	700-800
降伏強さ(MPa)	250-300	280-350	350-450
伸長（％）	12-15	15-18	10-15
硬度（HB）	150-170	170-190	190-220

9. Corrosion Resistance Standards

9.1 Corrosion Rate Data

環境	温度(℃)	腐食速度 (mm/年)	試験方法
海水	20	0.025	ASTM G31
淡水	20	0.013	ASTM G31
3% NaCl	20	0.028	ASTM G31
10% H₂SO₄	20	0.15	ASTM G31
工業的な雰囲気	20	0.008	ASTM G50

9.2 Galvanic Compatibility

Coupled Material	Galvanic Potential (mV)	Compatibility Rating
316 ステンレス鋼	+50	良い
炭素鋼	-300	貧しい
モネル400	+30	素晴らしい
チタン	+200	公平
アルミニウム青銅	-20	素晴らしい

10. Industry-Specific Standards

10.1 Marine Industry Requirements

標準	Organization	Requirements	応用
ネイス MR0175	NACE	サワーサービス	Offshore
DNV-GL Rules	DNV-GL	Marine Grade	Shipbuilding
ABS Rules	ABS	Marine Grade	Naval Vessels
Lloyd’s Register	LR	Marine Grade	Commercial Marine

10.2 Pressure Equipment Standards

標準	Region	Pressure Rating	温度範囲
ASME B31.3	国際的	Class 150-300	-29°C to 260°C
PED 2014/68/EU	ヨーロッパ	Category I-IV	-10°C to 200°C
AS1210	オーストラリア	Class 150-300	-20°C to 200°C
JIS B8285	日本	K10-K20	-10°C to 200°C

11. Certification Requirements

11.1 Material Certification Types

Certificate Type	標準	Content	応用
3.1 Certificate	EN 10204	Chemical & Mechanical	標準
3.2 Certificate	EN 10204	Third Party Verified	Critical Service
Type Test	ASTM A450	Production Testing	Qualification
PMI Certificate	ASTM E1916	Material Verification	Special Cases

11.2 Quality System Requirements

システム	標準	範囲	Audit Frequency
ISO9001	品質管理	Full System	Annual
ISO 14001	Environmental	環境への影響	Annual
ISO 45001	安全性	Occupational Health	Annual
API Q1	Oil & Gas	Product Quality	Biennial

12. Storage and Handling Standards

12.1 Storage Requirements

側面	Requirement	Monitoring	ドキュメンテーション
温度	10-30°C	Daily	Log Sheet
Humidity	<60% RH	Daily	Log Sheet
Stacking	Max 3 Layers	Per Movement	Inspection Report
保護	UV Protected	Monthly	Condition Report

12.2 Handling Specifications

Operation	Equipment	Procedure	安全要件
Loading	Crane/Forklift	Standard Lift	PPE Required
Transport	Cushioned Rack	Secured Load	Load Testing
Unloading	Crane/Forklift	Controlled Lower	Safety Zone
Storage	Rack System	Organized Stack	Regular Inspection

This comprehensive analysis of C95500 nickel aluminum bronze tubes provides detailed material standards and specifications for engineering, procurement, and quality control purposes. All specifications should be verified against current standards and specific project requirements.