alloy spring steel bar 1.60Si2Mn,SUP9,SUP10,65Mn 2.Size:6*40-20*150 3.JISG4801/GB/T1222 4.Surface:Smooth,Double Grooved

alloy spring steel bar

Specification

1) Grade:60Si2Mn,SUP7,55CrMnA,SUP9,50CrVA,SUP10,65Mn

2) Standard: JIS G4801:2005, GB/T 1222-2007

3) Size: Thickness 6-32.7 Width 60-154 Length 2-8m, or as your requirements

4) Surface: Smooth Plain, Double Grooved

5) Mechanical Property Chart

	Heat	Treatment	System	Mechenical		Properties
Grade	Quenching Temperature	Quenching Medium	Tempering Temperature	Tensile Strength	Yield Stremgth	Elongation	Reduction of Area
65Mn	830°C	Oil	540	980	785	8%	30%
60Si2Mn	870°C	Oil	480	1275	1180	5%	25%
55CrMnA	830-860°C	Oil	460-510	1225	1080	9%	20%
50CrVA	850°C	Oil	500	1275	1130	10%	40%

6) Chemical Composition Chart

Grade	C	Si	Mn	Cr	V	Ni	Cu	P	S
65Mn	0.62-0.70	0.17-0.37	0.90-1.20	≤0.25		≤0.25	≤0.25	≤0.025	≤0.025
60Si2MN	0.56-0.64	1.50-2.00	0.70-1.00	≤0.35		≤0.35	≤0.25	≤0.025	≤0.025
55CrMNA	0.52-0.60	0.17-0.37	0.65-0.95	0.65-0.95		≤0.35	≤0.25	≤0.025	≤0.025
50CrVA	0.46-0.54	0.17-0.37	0.50-0.80	0.80-1.10	0.10-0.20	≤0.35	≤0.25	≤ 0.035	≤0.035

7) Metallographic Structure: Tempering Troostite

8) Production Line: Short stress tandem rolling line

9) Bundle Weight: 3-4 tons

Profile:

We are a large-scale manufacturer for spring steel bar in Daqiuzhuang Tianjin,  which is one of the largest steel  production base in China. The spring flat steel  we produce has the character of high quality and competitive price.According to customers' requirements, we can produce nonstandard customized sizes of width, lenght and thickness.With excellent quality, reasonable price and good after-sales service,Daqiang spring flat steel has been sold to most provinces at home and abroad. We have established long and stable cooperation with many big company, such as China National Heavy Duty Truck Group Co., LTD(CNHTC), Shandong Wuzheng(Group) Co., LTD and etc.

            

             

            alloy spring steel bar