6CrW2Si Tool Steel

AOBO STEEL – Fornecedor global confiável de aço para ferramentas

6CrW2Si tool steel is a versatile alloy tool steel suitable for both cold and hot working applications, characterized by its impact toughness and wear resistance. Compared to the 4CrW2Si and 5CrW2Si grades, 6CrW2Si typically achieves higher hardness after quenching and exhibits better strength at elevated temperatures.

1. Chemical Composition(GB/ T 1299—2000)

C	Si	Mn	Cr	W	P	S
0.55 ~ 0.65	0.50 ~ 0.80	≤0.40	1.10 ~ 1.30	2.20 ~ 2.70	≤0.030	≤0.030

2. Temperatura do Ponto Crítico of 6CrW2Si

Ponto crítico	Ac₁	Ac₃	Senhora
Temperature (Approx. Value) /°C	775	810	280

3. Forging Process Specification for 6CrW2Si Steel

Item	Temperatura de aquecimento/°C	Temperatura inicial de forjamento/°C	Temperatura final de forjamento/°C	Resfriamento
Lingote de aço	1170 ~ 1200	1150 ~ 1180	≥850	Resfriamento lento
Tarugo de aço	1150 ~ 1170	1100 ~ 1140	≥800	Resfriamento lento

Please fill out the form to contact us to get the most competitive quotation for 6CrW2Si steel.

4. Tratamento térmico for 6CrW2Si Steel

1) Preheating of 6CrW2Si

Plano Preliminar de Tratamento Térmico	Parâmetros do processo
Post-forging General Annealing	Heating temperature is 800 ~ 820°C, hold for 3 ~ 5h, furnace cool to below 550°C, then air cool. Hardness is 229~285HBW. Microstructure is granular pearlite + small amount of carbides.
High-temperature Tempering Process	Heating temperature is 700 ~ 730°C, hold for 2 ~ 4h, furnace cool to below 500°C then air cool. The purpose is to improve the machinability of the steel.

2) Quenching of 6CrW2Si

Quenching Temperature/°C	Quenching Cooling Medium	Quenching Cooling Medium Temperature/°C	Cool to	Dureza HRC
860 ~ 900	Óleo	20 ~ 40	Oil Temperature	≥57

3) Tempering of 6CrW2Si

① Tempering Process Specification

Finalidade	Tempering Temperature/°C	Heating Medium	Meio de resfriamento	Dureza HRC
Eliminate internal stress and stabilize microstructure	200 ~ 250	Oil or molten salt	Ar	53 ~ 58
Reduce hardness and eliminate internal stress	430 ~ 470	Air furnace or molten salt, saltpeter	Ar	45 ~ 50

② Relationship between Hardness and Tempering Temperature

Tempering Temperature/°C	Não temperado	100	200	300	400	500	550	600
Dureza HRC	59	58	56	53	49	42	38	35

Note: 880°C oil quenched.

5. Mechanical Properties

6CrW2Si steel possesses relatively high toughness, high as-quenched hardness, a certain degree of high-temperature strength, and high fatigue strength. It exhibits slight temper brittleness when tempered in the range of 300-350°C. The hardness can reach 54-56 HRC after tempering at 250°C, and 50-52 HRC after tempering at 450°C. This steel’s resistance to tempering and its wear resistance are slightly superior to those of 5CrW2Si steel, but its toughness is comparatively lower.

Chromium-tungsten-silicon (Cr-W-Si) series steels demonstrate high sensitivity to decarburization, and their quenching deformation is difficult to control. Under abrasive wear conditions, they show insufficient wear resistance, and their impact toughness is lower than that of impact-resistant steels containing Molybdenum (Mo) and Nickel (Ni).

6. Applications

6CrW2Si steel is often used to manufacture heavy-duty stamping dies and cold-pressing dies where the failure modes are wear and collapse, or for manufacturing tools and dies that are subjected to impact loads and require high wear resistance, such as pneumatic tools, impact dies, cold shearing blades, blanking and trimming dies, and tools for air hammers.

7. Notas equivalentes

USA (ASTM/AISI): S1
Alemanha (DIN): 60WCrV7 or 1.2550
Rússia (GOST): 5KHV2S
Europe (EN): 60WCrV8

Get a Competitive Quote for 6CrW2Si Tool Steel

With over 20 years of forging expertise, Aobo Steel is your trusted partner for high-performance 6CrW2Si tool steel. We provide not just materials, but solutions. Leverage our deep industry knowledge and reliable supply chain for your project’s success.

✉ Entre em contato conosco preenchendo o formulário abaixo.

Nossos produtos

Explore nossos outros produtos

D2/1.2379/SKD11

D3/1.2080/SKD1

D6/1.2436/SKD2

A2/1.23663/SKD12

O1/1.2510/SKS3

O2/1.2842

S1/1.2550

S7/1.2355

DC53

H13/1.2344/SKD61

H11/1.2343/SKD6

H21/1.2581/SKD7

L6/1.2714/SKT4

M2/1.3343/SKH51

M35/1.3243/SKH55

M42/1.3247/SKH59

P20/1.2311

P20+Ni/1,2738

420/1.2083/2Cr13

422 aço inoxidável

Aço para rolamentos 52100

Aço inoxidável 440C

4140/42CrMo4/SCM440

4340/34CrNiMo6/1,6582

4130

5140/42Cr4/SCR440

SCM415