As one of the few suppliers in China for cold rolled special steel strips, we focus on high dimensional accuracy and excellent surface quality. We utilize the latest automated steelmaking systems and advanced technologies to process cold rolling and annealing to meet the requirements of the refined industry quality steel products.

Cold Rolled Alloy Tool Steel Strip


• Chemical Composition (%)

CSiMnPSCuNiCrWV
0.75-0.850.350.500.0300.0300.250.70-1.300.20-0.50------
0.75-0.850.350.500.0300.0300.251.30-2.000.20-0.50------
0.77-0.830.350.30-0.500.0300.0300.252.00-2.500.25------
0.85-0.950.350.600.0300.0300.250.30-0.700.15-0.35------
0.85-0.950.350.500.0300.0300.250.70-1.300.50------
0.75-0.850.15-0.350.500.0300.0300.251.30-2.000.20-0.50---0.20-0.30
0.90-1.000.15-0.350.30-0.500.0300.0300.25---0.20-0.40------
1.10-1.300.350.500.0300.0300.250.250.20-0.50------
0.80-0.900.350.80-1.000.0300.0300.25---0.40-0.60------
0.80-0.850.350.500.0300.0300.250.250.40-0.60---0.25-0.35
0.58-0.630.15-0.350.60-0.900.0300.0300.250.250.35-0.60---0.15-0.25

• Thickness Tolerance (mm)

Several different grades of thickness allowance― A(standard) and S, SS, and SSS(special)― are available. The thickness is
measured arbitrarily at more than 10 mm from the edge of the steel. When the width is 20 mm or less, the steel is measured in the center portion.

GradeASSSSSS
LarguraLess than 450Less than 450Less than 400Less than 200
Thickness
0.10-0.15±0.010±0.008±0.007±0.006
0.15-0.25±0.015±0.010±0.008±0.007
0.25-0.40±0.020±0.015±0.010±0.008
0.40-0.60±0.025±0.020±0.015±0.010
0.60-0.90±0.030±0.025±0.020±0.015
0.90-1.20±0.040±0.030±0.025±0.020
1.20-1.60±0.050±0.040±0.030±0.025
1.60-2.10±0.055±0.050±0.040±0.030
2.10-2.60±0.060±0.055±0.050±0.040
2.60-3.25±0.065±0.060±0.050±0.045
3.25-4.00±0.080±0.070±0.060±0.050
4.00-5.00±0.090±0.080±0.070---

• Width Tolerance (mm)

GradeAS
LarguraLess than 200Less than 450Less than 200Less than 450
Thickness
<0.60±0.15±0.25±0.10±0.20
0.60-1.20±0.20±0.30±0.15±0.25
1.20-3.25±0.25±0.40±0.20±0.35
3.25-4.00±0.25±0.40±0.20±0.35
4.00-5.00±0.40±0.55±0.35±0.50

• Lateral Bending Tolearance (mm)

GradeASSS
Largura
10-20201512
20-4015108
40-80864
80-45043-

cold rolled special steel strips, cold rolled alloy steel strips, cold rolled high strength steel strips

• Flatness Tolerance (mm)

ToleranceThickness
≤0.600.60-1.201.20-3.203.20-5.00
≤200AnnealedWidthwise1.01.01.52.0
Lengthwise2.03.03.05.0
Hard-drawnWidthwise1.01.51.52.5
Lengthwise3.04.04.06.0
200-450AnnealedWidthwise1.52.02.53.0
Lengthwise4.05.05.07.0
Hard-drawnWidthwise1.52.03.04.0
Lengthwise6.07.07.09.0

cold rolled special steel strips, cold rolled alloy steel strips, cold rolled high strength steel strips

• Hardness (HV)

StandardType of Steel Annealing HardnessDeep-Drawing Hardness
StandardSpecial
JISSKS5M190180200-280
SKS51M190180200-280

• Heat Treatment

Type of SteelOil Hardening
Temperature (°C)Hardness (HRC)
SKS5M800-85061
SKS51M800-85061

• Finish

Aside from ordinary annealing and hard-drawn finishes, Volda also implements PPC, PT, and other
finishes aimed at speeding up hardening and conserving heat. Cold-rolled special steel strip is available in the following finishes.

StageSymbolCondition
AnnealingAAnnealing is implemented after cold rolling
SkinpassSAnnealing and thermal refining are implemented after cold rolling
Deep drawingCCold rolling is implemented
PatentingPTPatenting treatment and fixed cold rolling are implemented
PPCPCSpheroidal carbide is refined

• Applications

Cutters
Hand Saws
Saw Blades
Tools

We have processing and forming simulation and analysis technology for cold rolled special steel strips and can carry out heat treatment, welding, stamping, roller pressure, rotary pressure, thermoforming and hydroforming and other process simulation and simulation analysis.

We also can provide users with high strength steel forming technical support and mold improvement support as well as 50kg-500kg sample testing with advanced technologies from steelmaking - hot rolling - pickling - cold rolling - annealing and other processes.

analysis for cold rolled alloy tool steel strip