Cold Drawn Wire Fibers

Cold Drawn Wire Fibers

Product introduction

This steel fiber is made by cutting cold drawn wires whose diameter is 0.4~1.0mm into short fibers according to regulated length. It can be be made with cutting knife, punch or rotary tool. Flexural strength of steel fiber made of cold drawing wire can be 1000~2000 Mpa. Because of its smooth surface, the fiber’s combined strength with concrete or cement mortar is not perfect. To improve this, users can change appearance of steel fiber, that is, produce abnormity steel fiber. Common methods include: pressing edges, wave forming, crotch etc. Its materials contain carbon steel and tainless steel fiber.

Properties

Alloy            Property	(GA)330	(GB)310	(GC)304	(GD)446	(GE)430	NAs430A
Melting point °C	1400~1425°C	1400~1450°C	1400~1425°C	1425~1510°C	1425~1510°C	1500-1580°C
876°C Elastic modulus (104 Mpa)	13.4	12.4	12.4	9.56	8.27	8.82
870°C Tensile strength (Mpa)	193	152	124	52.7	46.9	58
870°C Linear expansion coefficient (10-6/°C)	17.64	18.58	20.16	13.14	13.68	5.75
500°C Heat Conduction	21.6	18.7	21.5	24.4	26.3	28.6
Specific Gravity under room temperature (g/cm³)	8	8	8	7.5	7.8	7.8
Weight loss after 1000h of Circulation oxidation under 928 °C (%)	18	13	70(100hours)	4	70(100hours)	0.5
Concentration in the air-Circulation state	1035	1035	870	1175	870	1476
Gasification temperature (°C)-Continuous state	1150	1150	925	1095	815	1149
Corrosion rate in H2S (mil/yr)	/	100		100	200	/
Highest using temp. in SO2 (°C)	/	1050	800	1025	800	/
Corrosion rate in natural gas under 815 °C (mil/yr)	? /	3	/	4	12	/
Corrosion rate in Coke oven gas under 982 °C (mil/yr)	75	25	225	14	236	6
Nitriding rate in Anhydrous ammonia under 525°C(mil/yr)	20	55	80	175	<GC >GD	110
Corrosion rate in H2 under 454 °C (mil/yr)	/	2.3	48	8.7	21.9	/
982°C, 25h,40 cycles, alloy adding carbon after Solid carbide (%)	0.08	0.02	1.4	0.07	1.03	/
NAS430A is latest stainless steel in Japan. Almina content and melting point are both high. It is superior than other steel because of the protection of Al2O3 membrane.
Main advantages: Small heat shrinkable ratio, tiny distortion under rapid-cooling or rapid-heating environment, which is 2-3 times of that of other steel fiber. Its wear resistance (hardness) is over 1.5 times than that of other steel fiber. Acidification resistance and  oxidative stability in high temperature: implemented for 500 cycles in repeated Oxidation test (1000 °C * 30 minutes heating, cooling for 10 minutes), the oxidation is just 0.5 mg/cm2. This means it has very strong oxidation resistance, which is 3-6 times of that of other fiber.
Brand	Chemical compostion %
	C	P	Mn	Si	Cr	Ni
330	≤0.20	≤0.04	≤2.0	≤0.75	17—20	34—37
310	≤0.25	≤0.04	≤2.0	≤1.50	24—26	19—22
304	≤0.10	≤0.04	≤2.0	≤2.00	18—20	8—11
446	≤0.15	≤0.04	≤1.5	≤2.00	23—27	—
430	≤0.15	≤0.03	≤1.0	≤2.00	16—18	—
NAS430A	≤0.15	≤0.03	≤0.50	≤0.50	16-18	—
Name	Steel fiber Size(mm)				Allowable deviation (%)
Length (h)	20	25	30	35	±15
Width(B)	0.5-1	0.5-1	0.5-1	0.5-1	+8,-5
Thickness (H)	0.2-0.75	0.2-0.75	0.2-0.75	0.2-0.75	±0.1
Steel wire  type (Finished products-high quality steel wire)
No.	Tyep	Model	Length(mm)	Diameter(mm)	Flexual strength (mpa)	Shaoe
1	Steel wire cutting	Hy-01	10-60	0.4-1.0	≥1100	wave
2	Steel wire cutting	Hy-02	10-60	0.4-1.0	≥1100	straight
3	Steel wire cutting	Hy-03	10-60	0.4-1.0	≥1100	bow

Cold Drawn Wire Fibers