Product

Phosphor Bronze Plates and Strips

*Please contact us if you have any specific requests regarding chemical compositions, mechanical properties, and thicknesses.

Chemical Composition

Alloy No.	Chemical Composition（%）
Alloy No.	Sn	P	Fe	Pb	Zn	Cu+Sn+P
C5050	1.0～1.7	≦ 0.15	≦ 0.10	≦ 0.02	≦ 0.20	≧ 99.5
HRD200	1.7～2.3	≦ 0.15
C5111	3.5～4.5	0.03～0.35
C5102	4.5～5.5
C5191	5.5～7.0
C5212	7.0～9.0

Mechanical Properties

Alloy No.	Temper	Tension Test			Hardness Test
Alloy No.	Temper	Thickness Category ㎜	Tensile Strength N/m㎡	Elongation %	Thickness Category ㎜	Vickers Hardness HV*1
C5050	O	≧ 0.10 ≦ 5.0	≧ 240	≧ 40	－	－
	1/4H	≧ 0.10 ≦ 5.0	240～330	≧ 30	≧ 0.15 ≦ 5.0	60～120
	1/2H	≧ 0.10 ≦ 5.0	330～450	≧ 10	≧ 0.10 ≦ 5.0	90～155
	H	≧ 0.10 ≦ 5.0	390～500	≧ 3	≧ 0.10 ≦ 5.0	120～165
	EH	≧ 0.10 ≦ 5.0	≧ 460	－	≧ 0.05 ≦ 5.0	≧ 140
HRD200	O	≧ 0.10 ≦ 5.0	≧ 300	≧ 30	≧ 0.10 ≦ 5.0	70～115
	1/2H	≧ 0.10 ≦ 5.0	400～500	≧ 10	≧ 0.10 ≦ 5.0	125～165
	H	≧ 0.10 ≦ 5.0	450～550	≧ 5	≧ 0.10 ≦ 5.0	150～185
	EH	≧ 0.10 ≦ 5.0	500～600	≧ 2	≧ 0.10 ≦ 5.0	175～205
	SH	≧ 0.10 ≦ 5.0	600～700	－	≧ 0.10 ≦ 5.0	185～215
C5111	O	≧ 0.10 ≦ 5.0	≧ 295	≧ 38	－	－
	1/4H	≧ 0.10 ≦ 5.0	345～440	≧ 25	≧ 0.15 ≦ 5.0	80～150
	1/2H	≧ 0.10 ≦ 5.0	410～510	≧ 12	≧ 0.10 ≦ 5.0	120～180
	H	≧ 0.10 ≦ 5.0	490～590	≧ 7	≧ 0.10 ≦ 5.0	150～200
	EH	≧ 0.10 ＜ 0.20	570～660	－	≧ 0.05 ≦ 5.0	170～220
	EH	≧ 0.20 ≦ 5.0	570～660	≧ 3	≧ 0.05 ≦ 5.0	170～220
	SH	≧ 0.10 ≦ 5.0	≧ 640	－	≧ 0.05 ≦ 5.0	≧ 200
C5102	O	≧ 0.10 ≦ 5.0	≧ 305	≧ 40	－	－
	1/4H	≧ 0.10 ≦ 5.0	375～470	≧ 28	≧ 0.10 ≦ 5.0	90～160
	1/2H	≧ 0.10 ≦ 5.0	470～570	≧ 15	≧ 0.10 ≦ 5.0	130～190
	H	≧ 0.10 ≦ 5.0	570～665	≧ 7	≧ 0.10 ≦ 5.0	170～220
	EH	≧ 0.10 ＜ 0.20	620～710	－	≧ 0.05 ≦ 5.0	190～230
	EH	≧ 0.20 ≦ 5.0	620～710	≧ 4	≧ 0.05 ≦ 5.0	190～230
	SH	≧ 0.10 ≦ 5.0	≧ 660	－	≧ 0.05 ≦ 5.0	≧ 200
C5191	O	≧ 0.10 ≦ 5.0	≧ 315	≧ 42	－	－
	1/4H	≧ 0.10 ≦ 5.0	390～510	≧ 35	≧ 0.10 ≦ 5.0	100～160
	1/2H	≧ 0.10 ≦ 5.0	490～610	≧ 20	≧ 0.10 ≦ 5.0	150～205
	H	≧ 0.10 ≦ 5.0	590～685	≧ 8	≧ 0.10 ≦ 5.0	180～230
	EH	≧ 0.10 ＜ 0.20	635～720	－	≧ 0.05 ≦ 5.0	200～240
	EH	≧ 0.20 ≦ 5.0	635～720	≧ 5	≧ 0.05 ≦ 5.0	200～240
	SH	≧ 0.10 ≦ 5.0	≧ 690	－	≧ 0.05 ≦ 5.0	≧ 210
C5212	O	≧ 0.10 ≦ 5.0	≧ 345	≧ 45	－	－
	1/4H	≧ 0.10 ≦ 5.0	390～510	≧ 40	≧ 0.10 ≦ 5.0	100～160
	1/2H	≧ 0.10 ≦ 5.0	490～610	≧ 30	≧ 0.10 ≦ 5.0	150～205
	H	≧ 0.10 ≦ 5.0	590～705	≧ 12	≧ 0.10 ≦ 5.0	180～235
	EH	≧ 0.10 ＜ 0.20	≧ 685	－	≧ 0.05 ≦ 5.0	≧ 210
	EH	≧ 0.20 ≦ 5.0	≧ 685	≧ 5	≧ 0.05 ≦ 5.0	≧ 210

Note: The above standards are partially quoted from JIS H3110.
*1 Minimum test force is 1.961N

Thickness Tolerances

C5050・HRD200・C5111・C5102・C5191・C5212（Phosphor Bronze）
Unit：mm

Thickness		Tolerance (width)
Thickness		≦ 400
≧ 0.05	≦ 0.08	±0.005
＞ 0.08	≦ 0.15	±0.008
＞ 0.15	≦ 0.25	±0.013
＞ 0.25	≦ 0.4	±0.018
＞ 0.4	≦ 0.55	±0.020
＞ 0.55	≦ 0.7	±0.025
＞ 0.7	≦ 0.9	±0.030
＞ 0.9	≦ 1.2	±0.035
＞ 1.2	≦ 1.5	±0.045
＞ 1.5	≦ 2	±0.05
＞ 2	≦ 3	±0.06

Note: The above standards are partially quoted from JIS H3110. Double the above values when changing the tolerance from (±) to only (+) or (-)

Phosphor Bronze Plates and Strips for Springs

*Please contact us if you have any specific requests regarding chemical composition, mechanical properties, and thicknesses.

Chemical Composition

Alloy No.	Chemical Composition（%）
Alloy No.	Sn	P	Fe	Pb	Zn	Cu+Sn+P
C5210	7.0～9.0	0.03～0.35	≦ 0.10	≦ 0.02	≦ 0.20	≧ 99.5
C5240	9.0～11.00	0.03～0.35	≦ 0.10	≦ 0.02	≦ 0.20	≧ 99.5

Mechanical Properties

Alloy No.	Temper	Tension Test				Elastic Limit Test of Spring		Hardness Test
Alloy No.	Temper	Thickness Category mm	Tensile Strength N/m㎡	0.2% Yield Strength N/m㎡	Elongation %	Thickness Category mm	Elastic Limit of Spring (Kb0.1) N/m㎡	Thickness Category mm	Vickers Hardness HV*1
C5210	1/2H	≧ 0.10 ≦ 1.6	470～610	≧ 260	≧ 27	≧ 0.15 ≦ 1.6	≧ 245	≧ 0.10 ≦ 1.6	140～205
	H	≧ 0.10 ≦ 1.6	590～705	≧ 450	≧ 20	≧ 0.15 ≦ 1.6	≧ 390	≧ 0.10 ≦ 1.6	185～235
	EH	≧ 0.10 ≦ 1.2	685～785	≧ 580	≧ 11	≧ 0.15 ≦ 1.6	≧ 460	≧ 0.10 ≦ 1.2	210～260
	SH	≧ 0.10 ≦ 1.2	735～835	≧ 640	≧ 9	≧ 0.15 ≦ 1.6	≧ 510	≧ 0.10 ≦ 1.2	230～270
	ESH	≧ 0.10 ≦ 0.40	770～885	≧ 690	≧ 5	≧ 0.15 ≦ 1.6	≧ 560	≧ 0.10 ≦ 0.4	245～285
C5240	H	≧ 0.10 ≦ 1.6	650～750	≧ 510	≧ 11	≧ 0.15 ≦ 1.6	≧ 430	≧ 0.10 ≦ 1.6	200～240
	EH	≧ 0.10 ≦ 0.80	750～850	≧ 630	≧ 9	≧ 0.15 ≦ 1.6	≧ 510	≧ 0.10 ≦ 0.8	230～270
	SH	≧ 0.10 ≦ 0.40	850～950	≧ 750	≧ 5	≧ 0.15 ≦ 1.6	≧ 570	≧ 0.10 ≦ 0.40	250～300
	ESH	≧ 0.10 ≦ 0.40	≧ 950	≧ 870	－	≧ 0.15 ≦ 1.6	≧ 630	≧ 0.10 ≦ 0.40	≧ 270
	XSH	≧ 0.10 ≦ 0.40	≧ 1000	≧ 930	－	≧ 0.15 ≦ 1.6	≧ 700	≧ 0.10 ≦ 0.40	≧ 290

Note: The above standards are partially quoted from JIS H3130.
*1 Minimum test force is 1.961N

Thickness Tolerances

C5210・C5240
Unit：mm

Thickness		Tolerance (width)
Thickness		≦ 400
≧ 0.05	≦ 0.08	±0.005
＞ 0.08	≦ 0.15	±0.008
＞ 0.15	≦ 0.25	±0.013
＞ 0.25	≦ 0.4	±0.018
＞ 0.4	≦ 0.55	±0.020
＞ 0.55	≦ 0.7	±0.025
＞ 0.7	≦ 0.9	±0.030
＞ 0.9	≦ 1.2	±0.035
＞ 1.2	≦ 1.5	±0.045
＞ 1.5	≦ 2.0	±0.050

HQ Phosphor Bronze with High Strength and Bending Workability

As electronic devices and parts become smaller and thinner, the need for high strength and precision in the phosphor bronze as the base material also increases.

To meet these needs, we have established a production system for High Quality phosphor bronze with high bending workability (HQ series) in addition to our existing lineup.

Physical Properties

The HQ series is a phosphor bronze with improved mechanical properties through controlling the machining process. It has the same alloy composition as regular phosphor bronze and its physical properties are maintained.

Alloy No.	C5191	C5210	C5240
Melting Point（Liquidus）	1040℃	1020℃	1000℃
Melting Point（Solidus）	900℃	880℃	845℃
Specific Gravity	8.82	8.80	8.78
Linear Expansion Coefficient	18.2×10^-6 /K	18.2×10^-6 /K	18.4×10^-6 /K
Thermal Conductivity	67 W/m・K	63 W/m・K	50 W/m・K
Electrical Conductivity	14 %IACS	12 %IACS	10 %IACS
Specific Heat	375 J/Kg・K	377 J/Kg・K	375 J/Kg・K
Modulus of Elasticity（Tension）	115 kN/m㎡	110 kN/m㎡	105 kN/m㎡
Modulus of Elasticity（Deflection）	105 kN/m㎡	100 kN/m㎡	100 kN/m㎡

Chemical Composition

【Harada's Management Standard】The chemical composition of the HQ series is the same as conventional phosphor bronze. We make use of its advantages as a specialized manufacturer of phosphor bronze to manage impurities even more strictly.

Specifications	Sn	P	Pb	Zn	Fe	Cu+Sn+P
C5191	5.5～7.0	0.03～0.20	0.01^max	0.01^max	0.01^max	99.8^min
C5210	7.0～9.0	0.03～0.20	0.01^max	0.01^max	0.01^max	99.8^min
C5240	9.0～11.0	0.04～0.20	0.01^max	0.01^max	0.01^max	99.8^min
Standard	―	0.03～0.35	0.02^max	0.20^max	0.10^max	99.5^min

Product Size

HQ phosphor bronze is developed with the below tempers and thicknesses. Please contact us for inquiries about other sizes.

Type	Thickness	Temper
Type	Thickness	H	EH	SH	ESH	XSH
C5191HQ	0.05～0.30mm	○	○	○	―	―
C5210HQ		○	○	○	○	○
C5240HQ		○	○	○	○	○

Mechanical Properties

The below are typical examples of HQ and Harada’s average.

Alloy No.	Temper	Symbol	Tensile Strength　N/m㎡	0.2% Yield Strength　N/m㎡	Elongation　%	Hardness HV	Elastic Limit of Spring　N/m㎡
C5191	H	Standard	590～685	－	8^min	180～230	－
		HQ	630	614	22.6	203	－
		Harada’s average	620	600	17.6	202	－
	EH	Standard	635～720	－	5^min	200～240	－
		HQ	699	697	13.7	214	－
		Harada’s average	690	662	11.0	213	－
	SH	Standard	690^min	－	－	210^min	－
		HQ	744	739	12.7	222	－
		Harada’s average	725	710	8.3	216	－
C5210	H	Standard	590～705	450^min	20^min	185～235	390^min
		HQ	616	569	35.3	197	469
		Harada’s average	615	549	28.6	193	462
	EH	Standard	685～785	580^min	11^min	210～260	460^min
		HQ	721	694	23.2	229	563
		Harada’s average	724	684	17.0	228	554
	SH	Standard	735～835	640^min	9^min	230～270	510^min
		HQ	778	773	13.3	242	632
		Harada’s average	771	756	11.4	240	627
	ESH	Standard	770～885	690^min	5^min	245～285	560^min
		HQ	845	834	9.3	258	648
		Harada’s average	－	－	－	－	－
	XSH *	Standard	835～1000	－	1^min	－	630^min
		HQ	979	968	2.1	285	706
		Harada’s average	－	－	－	－	－
C5240	H	Standard	650～750	510^min	11^min	200～240	430^min
	H	HQ	693	657	25.6	223	558
	EH	Standard	750～850	630^min	9^min	230～270	510^min
	EH	HQ	800	783	15.3	245	585
	SH	Standard	850～950	750^min	5^min	250～300	570^min
	SH	HQ	890	877	9.2	267	661
	ESH	Standard	950^min	870^min	－	270^min	630^min
	ESH	HQ	1000	988	2.4	285	718
	XSH	Standard	1000^min	930^min	－	290^min	700^min
	XSH	HQ	1058	1044	2.0	305	883

Note: The above standards are partially quoted from JIS H3130. Applicable thicknesses are ≥0.05mm and ≤0.3mm.
*Internal standards are shown because the products are not standardized by JIS H3130(2018)

Thickness Tolerances (Common to both HQ series and Harada’s average)

C5240
Unit：mm

Thickness	Our Achievements	Standard
≧ 0.05㎜ ,≦ 0.08㎜	±0.002㎜	±0.005㎜
＞ 0.08㎜ ,≦ 0.15㎜	±0.002㎜	±0.008㎜
＞ 0.15㎜ ,≦ 0.25㎜	±0.003㎜	±0.013㎜
＞ 0.25㎜ ,≦ 0.30㎜	±0.004㎜	±0.018㎜

Note: The above standards are partially quoted from JIS H3130.

Copper Alloy Thatched Roof Material

The 10th “MIYAGI SUGUREMONO” association certification
Low thermal conductivity roof & siding board as building materials.

Low thermal conductivity metals are suitable due to their excellent heat insulation.

Copper alloy plate thatched roof material is made with a small amount of tin and phosphorous as the main components. It has excellent strength, wear resistance, has excellent bending and drawing workability and is strongly resistant to chemical corrosion.

Copper Alloy Thatched Roof Material : Merit

Copper alloy thatched roof material is a low thermal conductivity roofing material and lightweight, which means less weight on the roof, and has excellent durability and wear resistance, therefore maintenance is not necessary. In addition to copper having high recyclability and high value when it is replaced or removed, copper alloy plate costs about 70 to 75% less than titanium. In addition, through our development of equipment aimed at automating sulfurization, we are able to provide stable quality and flatness. Thanks to this, our copper alloy plate has been attracting attention and users’ demands.

Professor Oikawa Katsunari, Doctor of Engineering, Tohoku University School of Engineering
Associate Professor Ishihara Saori, Doctor of Engineering, Chiba Institute of Technology Department of Architecture and Civil Engineering

Product Name	Thermal Conductivity (W/m・K)	Weight （kg/㎡）	Maintenance
Copper Alloy Steel thatched roof material	205	4.5	Unnecessary
Copper alloy plate low１ (low thermal conductivity)	100 （MAX）	4.4
Copper alloy plate low 2 (ultra-low thermal conductivity)	78.3 (in development)	4.4
Phosphorus deoxidized copper	339	4.4
Slate	0.4	17～50	several times/year
Clay tiles	0.5	32～46	several times/year
Titanium	22	6～7	unnecessary

Japan Metal Roofing Association

Cool in Summer, Warm in Winter

Eco-roofs are recommended in Japan from an energy saving perspective (Architectural Institute of Japan Standard Specification ８ JASS8). We have developed a new copper alloy plate thatched roof material (low thermal conductivity) that meets the JASS8 standard by reducing copper’s thermal conductivity, one of its demerits. We are currently applying for a patent.

In addition to excellent heat insulation and durability, we have achieved stable quality and ease of handling through technological innovations in sulfurization.

[Energy for Air Conditioning] Reduced due to heat insulation effects

[Weight Comparison] Low burden on the house.

Compared to clay and slate (per 1㎡)

[Thermal Conductivity] Conventional Product comparison Approx. 70% reduction compared with conventional materials

[Material Value] Asset value : High At the time of disposal

high evaluation due to established copper scrap markets when replaced/removed

[Roof Life] Approx. 4 x longer life

compared with conventional materials

[Maintenance Free]

Due to high durability

Stable Quality and Rich Color Tone Changes

The color tone can be changed depending on the thickness of the copper sulfide coating, making it possible to match that of various types of renovated buildings. We are the only company in Japan that can carry out integrated mills from automated melt-casting to sulfurizing machines. Copper alloy plate’ color tone after changes the rapid artificial oxidation, sulfurization and chloride reaction, due to chemical reactions. Copper sulfurization processing is one type of "copper coloring" and creates a deep and calming style. It has received high praise for its adaptability to a wide variety of uses.

HS-DM (dark maroon)

HS-M (maroon)

HS-BM (bright maroon)

HS-RP (magenta)

HS-B (black)

(before sulfurization)

*We can also ship 30 to 50kg coiled fiber drums.

*The above color chart is for illustrative purposes only; please refer to the actual sample book when considering.

Sulfurization Processing Machine

Surface Processing

Fine processing can add features such as protection from fingerprints and preventing reflections to copper plates.

Design Processing

Punching metal processing

Embossing

Matte Processing

Vibration processing

Shot blast processing (using garnet)

Hairline processing

Patina Generation

Copper alloy plate thatched roof material grows a natural patina that is equal to or faster than phosphorous deoxidized copper.

How it is Used

Highly Antibacterial and Antiviral/Non-Magnetic Phosphor Bronze HAVB105

A newly patented non-magnetic material with better semi-permanent antibacterial properties than pure copper and that expands the use of zinc, nickel and chromium.

Patented Highly Antibacterial Phosphor Bronze

Our "HAVB105" with a 1.05% tin mixture as a component, showed high antibacterial and antiviral activity against various pathogenic bacteria, in a JIS test conducted by an external inspection agency. This result overturned the theory that "pure copper is the best anti-bacterial copper," and we have obtained a patent to enable us to produce products that utilize these properties.

*Technical development was done through joint research and academic guidance with Tohoku University.
［Patent No. 5656138］ "Phosphor bronze alloy with antibacterial properties and products using it."
［Patent No. 6473984］
Medical device manufacturing ClassⅠregistration certificate

Halo Experiment

Place a sample in the center of an agar medium inoculated with the test strain and measure the growth inhibition zone (halo) formed at the four edges of the sample after 48 hours of culturing at 37±2℃.

Film Test

A film is attached to a sample inoculated with the test bacterial solution, then cultured at 35±1℃ for 24 hours in an incubator. Bacteria adhering to the sample and film are washed out, and the viable cell count is measured.

Expanding Development of New Products with Highly Antibacterial and Antiviral Properties

High-pressure water is used to atomize molten metal into small powders. The surface area approximately triples and shows a halo that is two to five times wider. Our aim is to match demand (needs) by having a lot of shapes, such as three-dimensional (plate-like products), two-dimensional (linear products) and one-dimensional (powder products).

Experiment Confirming Odor Eliminating Effect

We placed 10g of HAVB105 powder in a non-woven fabric and arranged it in three shoe shelves with at a height of 160cm. The result was that odors had almost completely disappeared after 12 hours.

＜Odor Index＞10×10⁶▶10×10²（no odor）
Analysis: NST Technology

Experiment Confirming Freshness Preservation Effect

As a result of attaching a thin copper alloy plate to the inside of a special Styrofoam box, a measure against freshness deterioration in Styrofoam box transportation, it was confirmed that the freshness period of vegetables was preserved and extended as follows.

6 days in winter ⇒ 13 days
2 days in summer ⇒ 6 days

Applications/Use Examples

The antibacterial and antiviral properties can be demonstrated by wrapping it around or applying it to the boarding/disembarking handrails on public buses, subways, and trains, where an unknown number of people will ride. This reduces the spread of diseases from bacteria and viruses.

Doorknob/door lever (draw processing)

Doorknob/door lever 1.2mm plate material
(angled pipe)(vibration process finishing)

Handrail for general households (copper alloy powder)

Handrail for general households (copper alloy powder)

Assist rod for toilets(racking processing)
Base pipe: Aluminum secondary alloy

Forceps/tweezers

Racking Processing, Bulging Processing, Electromagnetic Forming

Racking processing

Bulging processing

Electromagnetic forming

Product Development Applying Anti-algal Effect

The highly antibacterial properties of HAVB105 also demonstrate an anti-algal effect. In addition, by winding HAVB105 around different materials, its new uses are expanding for water quality conservation in water treatment facilities such as garden ponds, water tanks, and water purification plants.

Measurements of anti-algal effect of antibacterial copper alloy (after 4 months from the start of the test)

Surface Processing

Fine processing can add features such as protection from fingerprints and preventing reflected light to copper plates, and combine design properties.

Design Processing

Punching metal process

Embossing

Matte Processing

Vibration processing

Shot blast processing (using garnet)

Hairline processing

Dull processing

Chemical Conversion Treatment Processing (prevents color and tone change/discoloration)

Dark orange

Silver

Turquoise

Clad Processing

Technology for joining dissimilar metals, such as aluminum and stainless steel, requires antibacterial properties. Clad processing is both lightweight and effective for cost reductions.

ProductProduct

Product

Phosphor Bronze Plates and Strips

Chemical Composition

Mechanical Properties

Thickness Tolerances

Phosphor Bronze Plates and Strips for Springs

Chemical Composition

Mechanical Properties

Thickness Tolerances

HQ Phosphor Bronze with High Strength and Bending Workability

Physical Properties

Chemical Composition

Product Size

Mechanical Properties

Thickness Tolerances (Common to both HQ series and Harada’s average)

Copper Alloy Thatched Roof Material

Copper Alloy Thatched Roof Material : Merit

Cool in Summer, Warm in Winter

In addition to excellent heat insulation and durability, we have achieved stable quality and ease of handling through technological innovations in sulfurization.

[Energy for Air Conditioning] Reduced due to heat insulation effects

[Weight Comparison] Low burden on the house.

[Thermal Conductivity] Conventional Product comparison Approx. 70% reduction compared with conventional materials

[Material Value] Asset value : High At the time of disposal

[Roof Life] Approx. 4 x longer life

[Maintenance Free]

Stable Quality and Rich Color Tone Changes

Sulfurization Processing Machine

Surface Processing

Design Processing

Matte Processing

Patina Generation

How it is Used

Highly Antibacterial and Antiviral/Non-Magnetic Phosphor Bronze HAVB105

Patented Highly Antibacterial Phosphor Bronze

Halo Experiment

Film Test

Expanding Development of New Products with Highly Antibacterial and Antiviral Properties

Experiment Confirming Odor Eliminating Effect

Experiment Confirming Freshness Preservation Effect

Applications/Use Examples

Racking Processing, Bulging Processing, Electromagnetic Forming

Product Development Applying Anti-algal Effect

Surface Processing

Design Processing

Matte Processing

Chemical Conversion Treatment Processing (prevents color and tone change/discoloration)

Clad Processing

Product
Product