Round Bar

Seamless Pipe

Rectangular Pipe

27simn Precision Bright Tube

Implementation Standards

GB/T3639、DIN2391、EN10305-4、DIN2393、ASTM A519

Applicable Scope

Automobile, machinery fittings, etc., have high requirement for the precision and smoothness of the steel pipe. Precision steel users are not only relatively high accuracy and smoothness requirements of the user, because the precision bright tube of high precision, tolerance can be maintained in the 2--8 wire, so many users in order to save the loss of mechanical processing industry, material, the seamless steel pipe or steel will slowly change as precision bright tube.

Chemical Composition

10# 0.07~0.13 0.17~0.37 0.35~0.65 ≤0.035 ≤0.035

20# 0.17~0.23 0.17~0.37 0.35~0.65 ≤0.035 ≤0.035

35# 0.32~0.39 0.17~0.37 0.35~0.65 ≤0.035 ≤0.035

45# 0.42~0.50 0.17~0.37 0.50~0.80 ≤0.035 ≤0.035

40cr 0.37~0.44 0.17~0.37 0.50~0.80 ≤0.035 ≤0.035 0.08~1.10

25Mn 0.22~0.2 0.17~0.37 0.70~1.00 ≤0.035 ≤0.035 ≤0.25

37Mn5 0.30~0.39 0.15~0.30 1.20~1.50 ≤0.015 ≤0.020

Mechanical Property

Brand	Delivery Status
	Cold working / hard (Y)		Cold working / soft (R)		Stress relief annealing (T)
	ób≥/MPa	δ 5≥(%)	ób≥/MPa	δ5≥(%)	ób≥/MPa	δ5≥(%)
10	410	6	375	10	335	12
20	510	5	450	8	430	10
30	590	4	550	6	520	8
45	645	4	630	5	610	7

Product

Round Bar

Seamless Pipe

Rectangular Pipe

27simn Precision Bright Tube