C27200 - ASTM B135/B135M-2017

USA UNS	C27200
Corresponding Standard	ASTM B135/B135M-2017 Standard Specification for Seamless Brass Tube
Classification	Copper and Copper Alloys

Chemical Element Composition Content (%)

Component	Fe	Cu	Pb	More
Minimum Value	-	62	-	Zn:余量
Maximum Value	0.07	65	0.07	Zn:余量

Mechanical Properties

out diameter; wall thickness D; t mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Hardness HBW
All specifications	General Requirement for Drawing H58	≥370	HR(30T): ≥53
D≤25；0.05≤t≤3	Drawn Hard State H80*	≥455	HR(30T): ≥70
25＜D≤50；0.09≤t≤5	Drawn Hard State H80*	≥455	HR(30T): ≥70
50＜D≤100；1.5≤t≤6	Drawn Hard State H80*	≥455	HR(30T): ≥70
t≤0.08	Softening Annealing O60		HR(30T): ≥40
t＞0.08	Softening Annealing O60		HRF: ≥80
t≤0.08	Light Annealing O50		HR(30T): ≥60
t＞0.08	Light Annealing O50		HRF: ≥90

① The average grain of the soft annealed (O60) pipes should be 0.025~0.06mm, light annealed (O50) pipes≤ 0.035 mm.
* Light-drawn (H55) and hard-drawn (H80 )tempers are available in round tube only.
※ Rockwell hardness values shall apply only to tubes having a wall thickness of 0.3 mm or over and to round tubes having an inside diameter of 8 mm or over and to rectangular including square tubes having an inside major distance between parallel surfaces of 5 mm or over. For all other tube no Rockwell hardness values shall apply. Rockwell hardness tests shall be made on the inside surface of the tube. When suitable equipment is not available for determining the specified Rockwell hardness, other Rockwell scales and values shall be specified subject to agreement between the manufacturer and the purchaser.

Approximate Comparison Table Brass

China	Japan	United States		International Organization for Standardization		Germany		European Standard		Russia
GB	JIS	ASTM	UNS	ISO	Numerical Grade	DIN EN/DIN	W-Nr.	EN	Numerical Grade	GOST
H63	C2720	63Cu-37Zn	C27200	CuZn37	C27200	CuZn37	C27200 2.0321	CuZn37	CW508L	Л63

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!