ASTM B134

ASTM B134 Specification

Scope

This specification establishes requirements for round, hexagonal, octagonal, rectangular and square brass wire of UNS Alloys C21000, C22000, C22600, C23000, C23400, C24000, C26000, C27000, and C27400. 1.2 Units—The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text and tables, the SI units are shown in brackets. The values stated in each system may not be exact equivalents: therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

Chemical Composition

Copper Alloy UNS No.	Composition, %
Copper Alloy UNS No.	Copper	Lead, max	Iron, max	Zinc
C21000	94.0-96.0	0.05	0.05	remainder
C22000	89.0-91.0	0.05	0.05	remainder
C22600	86.0-89.0	0.05	0.05	remainder
C23000	84.0-86.0	0.05	0.05	remainder
C23400	81.0-84.0	0.05	0.05	remainder
C24000	78.5-81.5	0.05	0.05	remainder
C26000	68.5-71.5	0.07	0.05	remainder
C27000	63.0-68.5	0.10	0.07	remainder
C27400	61.0-64.0	0.10	0.05	remainder

Mechanical Properties for Round, Hexagonal, Octagonal, and Square Wire 0.020 in. and Over in Diameter or Distance Between Parallel Surfaces (Imperial)

Temper Designation		Tensile Strength, ksi^A
Code	Name	Copper Alloy UNS No. C21000		Copper Alloy UNS No. C22000		Copper Alloy UNS Nos. C22600 and C23000		Copper Alloy UNS Nos. C23400 and C24000		Copper Alloy UNS Nos. C26000, C27000, and C27400
Code	Name	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max
H00	eighth-hard	35	45	38	50	43	57	50	65	50	65
H01	quarter-hard	41	51	45	57	53	65	62	75	62	77
H02	half-hard	49	58	56	67	66	77	78	90	79	94
H03	three-quarter hard	57	64	64	74	76	86	90	101	92	107
H04^B	hard	61	68	70	79	83	92	100	110	102	117
H06^C,D	extra-hard	66	73	78	86	94	102	112	121	115	129
H08^E,D	spring	72	…	84	…	100	…	116	…	120	…

Note :

A. ksi = 1000 psi.
B. H04 (hard) temper wire is not generally available in sizes over 1⁄2 in. in diameter.
C. H06 (extra-hard) temper is not generally available in sizes over 3⁄8 in. in diameter.
D. Square wire is not generally available in extra hard or spring tempers.
E. H08 (spring) temper is not generally available in sizes over 1⁄4 in. in diameter

Mechanical Properties for Round, Hexagonal, Octagonal, and Square Wire 0.020 in. and Over in Diameter or Distance Between Parallel Surfaces (Metric)

Temper Designation		Tensile Strength, MPa^A
Code	Name	Copper Alloy UNS No. C21000		Copper Alloy UNS No. C22000		Copper Alloy UNS Nos. C22600 and C23000		Copper Alloy UNS Nos. C23400 and C24000		Copper Alloy UNS Nos. C26000, C27000, and C27400
Code	Name	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max
H00	eighth-hard	240	310	260	345	295	395	345	450	345	450
H01	quarter-hard	285	350	310	395	365	450	425	515	425	530
H02	half-hard	340	400	385	460	455	530	540	620	545	650
H03	three-quarter hard	395	440	440	510	525	595	620	700	635	740
H04^B	hard	420	470	485	545	570	635	690	760	700	810
H06^C,D	extra-hard	455	505	540	595	650	700	770	830	790	890
H08^E,D	spring	495	…	580	…	690	…	800	…	830	…

Note :

B. H04 (hard) temper wire is not generally available in sizes over 13 mm in diameter.
C. H06 (extra-hard) temper is not generally available in sizes over 10 mm in diameter.
D. Square wire is not generally available in extra hard or spring tempers.
E. H08 (spring) temper is not generally available in sizes over 6 mm in diameter.

Grain Size Requirements and Approximate Rockwell Hardness Values for Annealed Wire

Temper Designation		Grain Size, mm		Approximate Rockwell Hardness for Rectangular WireA
Temper Designation		Grain Size, mm		F Scale		30-T Scale
Standard B 601	Nominal	Min	Max	Min	Max	Min	Max
Copper Alloy UNS No. C21000
OS050	0.050	0.035	0.090	40^B	52^B	…	4
OS035	0.035^C	0.025	0.050	47^B	54^B	…	7
OS025	0.025	0.015	0.035	50^B	61^B	1	17
OS015	0.015^C	^D	0.025	54^B	65^B	7	23
Copper Alloy UNS No. C22000
OS050	0.050	0.035	0.090	50	60	1	16
OS035	0.035^C	0.025	0.050	54	64	7	21
OS025	0.025	0.015	0.035	58	70	13	31
OS015	0.015^C	^D	0.025	62	75	19	39
Copper Alloy UNS Nos. C22600, C23000, and C23400
OS070	0.070	0.050	0.100	53	60	6	16
OS050	0.050^C	0.035	0.070	56	63	10	20
OS035	0.035^C	0.025	0.050	58	66	13	24
OS025	0.025^C	0.015	0.035	60	72	16	34
OS015	0.015^C	^D	0.025	62	79	19	48
OS010	0.010^C	^D	0.015	66	83	25	50
Copper Alloy UNS No. C24000
OS070	0.070	0.050	0.120	53	64	2	21
OS050	0.050^C	0.035	0.070	57	67	8	27
OS035	0.035^C	0.025	0.050	61	72	16	35
OS025	0.025^C	0.015	0.035	63	77	20	42
OS015	0.015^C	^D	0.025	66	83	25	50
Copper Alloy UNS Nos. C26000, C27000, and C27400
OS120	0.120	0.070	…	50	62	…	21
OS070	0.070	0.050	0.120	52	67	3	27
OS050	0.050	0.035	0.070	61	73	20	35
OS035	0.035	0.025	0.050	65	76	25	38
OS025	0.025	0.015	0.035	67	79	27	42
OS015	0.015	^D	0.025	72	85	33	50

Note:

A. Rockwell hardness values apply as follows: The F scale applies to metal 0.020 in. [0.5 mm] in thickness and over; the 30-T scale applies to metal 0.015 in. [0.4 mm]
in thickness and over.
B. Copper Alloy UNS No. C21000 in these several OS (annealed) tempers is too soft for Rockwell F hardness tests below 0.030 in. [0.75 mm] in thickness.
C. The nominal grain sizes are those in which wire other than rectangular are normally available. Rectangular wire is normally available in any of the nominal grain sizes
listed.
D. Although no minimum grain size is required, the material must be fully recrystallized.

Mechanical Properties and Approximate Rockwell Hardness Values for Rectangular Wire (Imperial)

Temper Designation		Tensile Strength, ksi		Approximate Rockwell Hardness ^A
Temper Designation		Tensile Strength, ksi		B Scale		Superficial 30-T
Standard B 601	Former	Min	Max	0.020 to 0.036 in. incl	Over 0.036 in.	0.012 to 0.028 in. incl	Over 0.028 in.
Copper Alloy UNS No. C21000
H01	quarter-hard	37	47	20-48	24-52	34-51	37 54
H02	half-hard	42	52	40-56	44-60	46-57	4S-59
H03	three-quarter-hard	46	56	50-61	53-64	52-60	54-62
H04	hard	50	59	57-64	60-67	57-62	59-64
H06	extra hard	56	64	64-70	66-72	62-66	63-67
H08	spring	60	6S	68-73	70-75	64-65	65-69
H10	extra spring	61	69	69-74	71-76	65-69	66-70
Copper Alloy UNS No. C22000
H01	quarter-hard	40	50	27-52	31-56	38-53	41-56
H02	half-hard	47	57	50-63	53-66	52-61	54-63
H03	three-quarter-hard	52	62	59-68	62-71	58..64	60-66
H04	hard	57	66	65-72	68-75	62-66	64-6S
H06	extra hard	64	72	72 77	74-79	67-71	68-72
H08	spring	69	77	76-79	78-81	70-72	71-73
H10	extra spring	72	80	78-81	80-83	71-73	72-74
Copper Alloy UNS Nos. C22600, C23000
H01	quarter-hard	44	54	33-58	37-62	42-57	45-60
H02	half-hard	51	61	56-68	59-71	56-64	58-66
H03	three-quarter-hard	57	67	66-73	69-76	63-6S	65-70
H04	hard	63	72	72-78	74-80	67-71	68-72
H06	extra hard	72	80	78-83	80-85	70-74	71-75
H08	spring	78	86	82-85	84-87	74-76	75-77
H10	extra spring	82	90	84-87	86-89	75-77	76-78
Copper Alloy UNS Nos. C23400 and C24000
H01	quarter-hard	48	58	38-61	42-65	42-57	45-60
H02	half-hard	55	65	59-70	62-73	56-64	58-66
H03	three-quarter-hard	61	71	69-76	72-79	63-68	65-70
H04	hard	68	77	76-82	78-84	68-72	69-73
H06	extra hard	78	87	83-87	85-89	72-75	73-76
H08	spring	85	93	87-90	89-92	75-77	76-78
H10	extra spring	89	97	88-91	90 93	76-78	77-79
Copper Alloy UNS No. C26000
H01	quarter-hard	49	59	40-61	44-65	43-57	46-60
H02	half-hard	57	67	60-74	63-77	56-66	58-68
H03	three-quarter-hard	64	74	72-79	75-82	65-70	67-72
H04	hard	71	81	79-84	81-86	70-73	71-74
H06	extra hard	83	92	85-89	87-91	74-76	75-77
H08	spring	91	100	89-92	90-93	76-78	76-78
H10	extra spring	95	104	91-94	92-95	77-79	77-79
Copper Alloy UNS Nos. C27000 and C27400
H01	quarter-hard	49	59	40-61	44-65	43-57	46-60
H02	half-hard	55	65	57-71	60-74	54-64	56-66
H03	three-quarter-hard	62	72	70-77	73-80	65-69	67-71
H04	hard	68	78	76-82	78-84	68-72	69-73
H06	extra hard	79	89	83-87	85-89	73-75	74-76
H08	spring	86	95	87-90	89-92	75-77	76-78
H10	extra spring	90	99	88-91	90 93	76-78	77-79

Note:

A. Rockwell hardness values apply as follows: the B scale values apply to metal 0.020 in. and over in thickness, and the 30-T scale values apply to metal 0.012 in. and over in thickness.

Mechanical Properties and Approximate Rockwell Hardness Values for Rectangular Wire (Metric)

Temper Designation		Tensile Strength, ksi		Approximate Rockwell Hardness ^A
Temper Designation		Tensile Strength, ksi		B Scale		Superficial 30-T
Standard B 601	Former	Min	Max	0.020 to 0.036 in. incl	Over 0.036 in.	0.012 to 0.028 in. incl	Over 0.028 in.
Copper Alloy UNS No. C21000
H01	quarter-hard	255	325	20-48	24-52	34-51	37-54
H02	half-hard	290	360	40-56	44-60	46-57	4B-59
H03	three-quarter-hard	315	3B5	50-61	53-64	52-60	54-62
H04	hard	345	405	57-64	60-67	57-62	59-64
H06	extra hard	3B5	440	64-70	66-72	62-66	63-67
H08	spring	415	470	68-73	70-75	64-6B	65-69
H10	extra spring	420	475	69-74	71-76	65-69	66-70
Copper Alloy UNS No. C22000
H01	quarter-hard	275	345	27-52	31-56	38-53	41-56
H02	half-hard	325	395	50-63	53-66	52-61	54-63
H03	three-quarter-hard	360	425	59-68	62-71	58-64	60-66
H04	hard	395	455	65-72	6B-75	62-66	64-68
H06	extra hard	440	495	72-77	74-79	67-71	68-72
H08	spring	475	530	76-79	78-81	70-72	71-73
H10	extra spring	495	550	78-81	80-83	71-73	72-74
Copper Alloy UNS Nos. C22600, C23000
H01	quarter-hard	305	370	33-58	37-62	42-57	45-60
H02	half-hard	350	420	56-68	59-71	56-64	58-66
H03	three-quarter-hard	395	460	66-73	69-76	63-68	65-70
H04	hard	435	495	72-78	74-80	67-71	68-72
H06	extra hard	495	550	78-83	80-85	70-74	71-75
H08	spring	540	595	82-85	84-87	74-76	75-77
H10	extra spring	565	620	84-87	86-89	75-77	76-78
Copper Alloy UNS Nos. C23400 and C24000
H01	quarter-hard	330	400	38-61	42-65	42-57	45-60
H02	half-hard	380	450	59-70	62-73	56-64	58-66
H03	three-quarter-hard	420	490	69-76	72-79	63-68	65-70
H04	hard	470	530	76-82	78-84	68-72	69-73
H06	extra hard	540	600	83-87	85-89	72-75	73-76
H08	spring	585	640	87-90	89-92	75-77	76-78
H10	extra spring	615	670	88-91	90-93	76-78	77-79
Copper Alloy UNS No. C26000
H01	quarter-hard	340	405	40-61	44-65	43-57	46-60
H02	half-hard	395	460	60-74	63-77	56-66	58-60
H03	three-quarter-hard	440	510	72-79	75-82	65-70	67-72
H04	hard	490	560	79-84	81-86	70-73	71-74
H06	extra hard	570	635	85-89	87-91	74-76	75-77
H08	spring	625	690	89-92	90-93	76-78	76-78
H10	extra spring	655	720	91-94	92-95	77-79	77-79
Copper Alloy UNS Nos. C27000 and C27400
H01	quarter-hard	340	405	40-61	44-65	43-57	46-60
H02	half-hard	380	450	57-71	60-74	54-64	56-66
H03	three-quarter-hard	425	495	70-77	73-80	65-69	67-71
H04	hard	470	540	76-82	78-84	68-72	69-73
H06	extra hard	545	615	83-87	85-89	73-75	74-76
H08	spring	595	655	87-90	89-92	75-77	76-78
H10	extra spring	620	685	88-91	90-93	76-78	77-79

Note:

B. Rockwell hardness values apply as follows: the B scale values apply to metal 0.5 mm and over in thickness, and the 30-T scale values apply to metal 0.3 mm and over in thickness.

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ASTM B134

ASTM B134 Specification

Table of Contents

Scope

Chemical Composition

Mechanical Properties for Round, Hexagonal, Octagonal, and Square Wire 0.020 in. and Over in Diameter or Distance Between Parallel Surfaces (Imperial)

Mechanical Properties for Round, Hexagonal, Octagonal, and Square Wire 0.020 in. and Over in Diameter or Distance Between Parallel Surfaces (Metric)

Grain Size Requirements and Approximate Rockwell Hardness Values for Annealed Wire

Mechanical Properties and Approximate Rockwell Hardness Values for Rectangular Wire (Imperial)

Mechanical Properties and Approximate Rockwell Hardness Values for Rectangular Wire (Metric)

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