CW-1

Grade Introduction:

The high-quality USA AISI CW-1 material is one of the more steel grades we supply, W-Ta-Nb-Ti-Co class carbide. CW-1 is our main production grade, which has been approved by customers in many countries since its initial production, including our CW-1 round bars, flat bar, forgings, fasteners, tubes, wires, strips, sheets & Plates, as well as a variety of profiles, professional high precision auto-lathe processing manufacturer of clinching fasteners, axes, standoffs, screws, studs, nuts, bolt, OEM parts and special-shaped turning parts the state of delivery includes quenched and tempered, annealed, machined semi-finished products, we also have strict management of the packaging, to avoid material damage from transportation. We are the best supplier of CW-1 materials, and we are willing to develop together with customers from all over the world.

Grade Application:

• Plastic injection molds and inserts

• Plastic injection and extrusion feed screws

• Non-return valve components

• Pelletizing equipment

• Nozzles

• Gate and nozzle inserts.

• Industrial knives, slitters, and cutters.

• Wear-resistant specialty cutlery.

• Wear components for food and chemical processing.

• Bearings, bushings, valves, rolls.

• Gear pumps.

Equivalent grades:

Material	Standard	Country
CW-12MW	AISI	USA

Addition to other grades:

MS, EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, HCHCR, D2, D3, H-11, H-13, CW-1, OHNS, M2, M35, M42, DIN1.2714, P20, P20+S, P20+Ni,  SCM420, ASTMSA-36, ASTMSA-105, SAE1018, SAE4140, SAE8620, 16MNCR5, 20MNCR5, C20, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE52100, S40C, S355J2G3.

Our Supply Range:

Price List:

Chemical composition:

The following table shows the chemical composition of CW-1 steel:

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr ≤	Ni ≤
6.7	–	–	–	–	–	–
Mo	AI	W	Nb	Ti	V	Ta
–	–	68.9	1.6	6.7	–	5.4
N	Co	Pb	B	Other	–	–
–	10.7	–	–	–	–	–

 

Mechanical Properties:

Properties		Conditions
T (°C)Treatment	–	–	–
Density (×1000 kg/m3)	7.7-8.03	25	–
Poisson’s Ratio	0.27-0.30	25	–
Elastic Modulus (GPa)	190-210	25	–
Tensile Strength (Mpa)	1158	25	oil quenched, fine grained, tempered at 425°C
Yield Strength (Mpa)	1034	–	–
Elongation (%)	15	–	–
Reduction in Area (%)	53	–	–
Hardness (HB)	335	25	oil quenched, fine grained, tempered at 425°C

Hardness:

335

Heat treatment:

1565°C – 1756°C

Hardening:

Micro-Melt 420-CW tool steel should be heat treated using proper precautions to prevent decarburization. First preheat to 1500/1550°F (816/843°C), equalize, and transfer to a furnace maintained at the desired hardening temperature. Austenitize: 1950-2150°F (1066-1175°C) and hold time at temperature for 20-30 minutes. Note: For larger section sizes, fan air cooling or step quenching in oil or salt may be used in order to obtain the optimum quench rate.

Tempering:

Tools should be tempered immediately after completion of the hardening treatment. The tempering temperature may be adjusted according to the final hardness desired. Double temper at 400-750°F (200-400°C). Hold for a minimum of 2 hrs. each temper. Tempering in this temperature range provides the best corrosion resistance and wear resistance. Tempering between about 800 and 1000°F (427 and 538°C) is not recommended. All martensitic stainless steels suffer from embrittlement when tempered in this range.

For optimum stress relieving and dimensional stability, Micro-Melt 420-CW may be double tempered at 1025°F, but some loss of corrosion resistance may result.

A –100°F refrigeration treatment may be employed between the first and second tempers, if desired. Freezing treatments should always be followed by at least one temper.
The typical hardness of Micro-Melt 420-CW after hardening and tempering is 56-60 HRC.

Physical Properties:

Quantity	Value	Unit
Thermal expansion	16 – 17	e-6/K
Thermal conductivity	16 – 16	W/m.K
Specific heat	500 – 500	J/kg.K
Melting temperature	1370 – 1400	°C
Service temperature	0 – 500	°C
Density	8000 – 8000	kg/m3
Resistivity	0.7 – 0.7	Ohm.mm2/m

 

Thermal Properties:

Properties	Conditions	–	–
T (°C)	Treatment	–	–
Thermal Conductivity (W/m-K)	42.7	100	–
Specific Heat (J/kg-K)	477	50-100	–

Forging Properties:

Heat slowly to 2000/2100°F (1093/1149°C). Do not work below 1700°F (927°C). Reheat as necessary. Cool forgings slowly and anneal immediately upon cooling.

Stress Relieving:

Annealed Parts: Heat to 1100-1300°F (593-705°C), hold 2 hours, then furnace cool or cool in still air.Hardened Parts: Heat to 25-50°F (15-30°C) below original tempering temperature, hold 2 hours, then furnace cool or cool in still air.

Normalizing:

Normalizing is not recommended.

Annealing:

Heat slowly to 1650°F (899°C), hold for 2 hours, cool slowly at a rate of 25°F (14°C) maximum per hour to 1000°F (538°C), then either furnace cool or cool in still air to room temperature. Typical annealed hardness will be 277 Brinell.

Density:

Quantity	Value	Unit
Density	8000-8000	kg/m3

 

Machinability:

The machinability of Micro-Melt 420-CW tool steel in the annealed condition may be rated between 35% and 40% of 1% carbon tool steel. Tooling providers’ recommendations for cutting fluids should be followed.

Micro-Melt 420-CW tool steel can be easily EDM’d. Use proper precautions to prevent and/or remove the “white layer.”

Welding:

Supply Cities:

Ambattur, Bangalore, Chennai, Coimbatore, Dindigul, Guindy, Madurai, Nellore, Hyderabad, Tirupur, Tuticorin, Madurai, Andhra Pradesh, Karnataka, Puducherry, Kerala, Kanyakumari, Telangana, Salem, Thanjavur, Trichy, Erode, Vellore,  Karur, Nagercoil, Kanchipuram, Karaikudi, Pudukottai, Nagapattinam.

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