Audited Supplier
round bar
Plates/Round/Flat/Block
AISI, ASTM, DIN, JIS, GB, BS
Ferrous Steel Scrap
Hot Forged or Hot Rolled
Bar
Polished
High-strength Steel Plate, Wear Resistant Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
Die Steel Bar
Smooth
Wooden or Bulk
6-400mm or (10-350)*(100-710)
China
722840000
Product Description
H11 Tool Steel/1.2343/SKD6
H11 Tool Steel is a deep-hardening, air-hardening steel that exhibits minimal size change during heat treatment.It contains less vanadium than the widely-used H13 tool steel,the steel has very good toughness,good thermal strength, thermal fatigue properties and a certain wear resistence under the condition of medium temperature.Air quenching under the low austenitizing temperature,heat treatment deformation is small ,tendency to produce iron oxide is small when air quenching,and it can resist erosion of the molten aluminum.
1.Size Range for H11 Tool Steel
H11 Steel Round Bar: diameter 80mm~420mm
H11 Steel Plate: thickness 25mm~400mm x width 200mm~800mm
Delivery Condition:
Tured Round Bar,Milling Plate,Black,requiremts for customers.
Spheroidizing Annealing,ESR material.
2.H11 Tool Steel Equivalent Grades
3.H11 Tool Steel Chemical Composition
4.H11 Tool Steel Physical Properties
Physical properties of H11 Tool Steel are listed in the tables below.The density is 7.69g/cm3 ,and the specific heat at the constant pressure(20°C) Cp is 459.8J/(kg·K).
Critical temperature of H11 Tool Steel
Coefficient of linear thermal expansion
Thermal conductivity of H11
Elastic modulus of H11
5.Forging of H11 Tool Steel
6.Heat treatment of H11 Tool Steel
Soft Annealing
Stress Relieving
Hardening
Tempering
-Tempering hardness is approximate and based on two hours at temperature.
-Optimal heat treatment parameters should be followed to achieve maximum potential mold life
7.Applications of H11 Tool Steel
H11 tool steel is recommended for hot tooling applications where maximum resistance to cracking is required. Such applications include hot punches, die casting dies, forging dies, hot shear blades, hot gripper dies, and extrusion tooling. The tools produced from chromium hot-work steels can be cooled using water without damage as these steels have low carbon and alloy contents.In addition,due to its good medium thermal strength,H11 also has been used as structural parts in manufacture of aircraft and rockets under the working temperature 752~932°F (400~500°C).
H11 Tool Steel is a deep-hardening, air-hardening steel that exhibits minimal size change during heat treatment.It contains less vanadium than the widely-used H13 tool steel,the steel has very good toughness,good thermal strength, thermal fatigue properties and a certain wear resistence under the condition of medium temperature.Air quenching under the low austenitizing temperature,heat treatment deformation is small ,tendency to produce iron oxide is small when air quenching,and it can resist erosion of the molten aluminum.
1.Size Range for H11 Tool Steel
H11 Steel Round Bar: diameter 80mm~420mm
H11 Steel Plate: thickness 25mm~400mm x width 200mm~800mm
Delivery Condition:
Tured Round Bar,Milling Plate,Black,requiremts for customers.
Spheroidizing Annealing,ESR material.
2.H11 Tool Steel Equivalent Grades
| Country | USA | German | Japan | China | |
| Standard | ASTM A681 | W-nr. | DIN | JISG4404 | GB/T1299-2000 |
| Grades | H11 | 1.2343 | X38CrMoV51 | SKD6 | 4Cr5MoSiV |
| Grades | C% | Si% | Mn% | P% | S% | Cr% | Mo% | V% |
| H11 | 0.32~0.43 | 0.80~1.20 | 0.20~0.50 | ≤0.03 | ≤0.03 | 4.75~5.50 | 1.10~1.60 | 0.30~0.60 |
| 1.2343/X38CrMoV51 | 0.36~0.42 | 0.90~1.20 | 0.30~0.50 | ≤0.03 | ≤0.03 | 4.80~5.50 | 1.10~1.40 | 0.25~0.50 |
| SKD6 | 0.35~0.42 | 0.80~1.20 | ≤0.50 | ≤0.030 | ≤0.020 | 4.50~5.50 | 1.00~1.50 | 0.30~0.50 |
Physical properties of H11 Tool Steel are listed in the tables below.The density is 7.69g/cm3 ,and the specific heat at the constant pressure(20°C) Cp is 459.8J/(kg·K).
Critical temperature of H11 Tool Steel
| Critical point | Ac1 | Ac3 | Ar1 | Ar3 | Ms | Mf |
| Temp.(approximation) | 1567°F (853°C) | 1673°F (912°C) | 1328°F (720°C) | 1423°F (773°C) | 590°F (310°C) | 217°F (103°C) |
| Temp./ °C | 20~100 | 20~200 | 20~300 | 20~400 | 20~500 | 20~600 | 20~700 |
| Coefficient/°C-1(x10-6) | 10.0 | 10.9 | 11.4 | 12.2 | 12.8 | 13.3 | 13.6 |
| Temp. /°C | 100 | 200 | 300 | 400 | 500 | 600 | 700 |
| λ/W•(m•K)-1 | 25.9 | 27.6 | 28.4 | 28.0 | 27.6 | 26.7 | 25.9 |
| Temp. /°C | 20 | 100 | 200 | 300 | 400 | 500 |
| E/MPa | 227000 | 221000 | 216000 | 208000 | 200000 | 192000 |
| Items | Heating temperature | Starting forging temperature | Final forging temperature | Cooling |
| Ingot | 2084~2156°F (1140~1180°C) | 2012~2102°F (1100~1150°C) | ≥1652°F (≥900°C) | Cooling in hole or sand |
| Billet | 2048~2102°F (1120~1150°C) | 958~2012°F (1070~1100°C) | 1562~1652°F (850~900°C) | Cooling in hole or sand |
Soft Annealing
| Temperature | Cooling | Hardness |
| 1382~1470°F (750~799°C) | Furnace 20°F per hour to 1200°F(649°C),then air cooling. | 230HB Max |
| Temperature | Cooling | Hardness |
| 1200°F(649°C) for 2 hours | Cool slowly to 930°F(499°C) in air | 230HB Max |
| Temperature | Cooling | Hardness |
| 1850~1880°F(1010~1027°C) Hold at temperature for 30 minutes | Vacuum quench to 1000°F(538°C),then cool to below150°F(65°C) | 54HRC Max Quenched |
| Temp. | 752°F (400°C) | 932°F (500°C) | 1022°F (550°C) | 1112°F (600°C) | 1202°F (650°C) | 1292°F (700°C) |
| Hardness HRC | 52 | 54 | 52 | 48 | 38 | 31 |
-Optimal heat treatment parameters should be followed to achieve maximum potential mold life
7.Applications of H11 Tool Steel
H11 tool steel is recommended for hot tooling applications where maximum resistance to cracking is required. Such applications include hot punches, die casting dies, forging dies, hot shear blades, hot gripper dies, and extrusion tooling. The tools produced from chromium hot-work steels can be cooled using water without damage as these steels have low carbon and alloy contents.In addition,due to its good medium thermal strength,H11 also has been used as structural parts in manufacture of aircraft and rockets under the working temperature 752~932°F (400~500°C).
