H-13
Grade Introduction:
H13 Tool Steel is a versatile chromium-molybdenum hot work steel that is widely used in hot work and cold work tooling applications. The hot hardness (hot strength) of H13 resists thermal fatigue cracking which occurs as a result of cyclic heating and cooling cycles in hot work tooling applications. Because of its excellent combination of high toughness and resistance to thermal fatigue cracking (also known as heat checking) H13 is used for more hot work tooling applications than any other tool steel.
Because of its high toughness and very good stability in heat treatment, H13 is also used in a variety of cold work tooling applications. In these applications, H13 provides better hardenability (through hardening in large section thicknesses) and better wear resistance than common alloy steels such as 4140.
Grade Application
Hot forging and pressing dies, Extrusion dies, mandrels and punches, Hot chisels, Pressure pads, Extrusion stems, and rams, Blanking and bending tools, Hot heading tools, Backer blocks.
Equivalent Grades
Country |
USA |
German |
Japan |
Standard |
ASTM A681 |
DIN EN ISO 4957 |
JIS G4404 |
Grades |
H13 |
1.2344/X40CrMoV5-1 |
SKD61 |
Our Supply Range
We supply to automotive ancillaries and OEM customers. The products we manufacture are used as input for manufacturing of automotive and general engineering components. These components are further assembled into systems fitted in automobiles and other engineering applications.
| Product Type | Size Range |
|---|---|
| Forged Round Bars | 140mm Dia to 850mm |
| Rolled Round Bars | 16mm Dia and above |
| Forged Flat Bars | Thickness: 32mm to 510mm, Width: 65mm to 1050mm |
| Rolled Flat Bars | Thickness: 6mm to 110mm, Width: 25mm to 510mm |
Chemical Composition
The following table shows the chemical composition of H-13 steel:
Element |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
V |
Cu |
Content (%) |
0.32-0.45 |
0.80-1.20 |
0.20-0.50 |
0.03 |
0.03 |
4.75-5.50 |
1.10-1.75 |
0.3 |
0.80-1.20 |
0.25 |
Heat Treatment
H13 tool steels are preheated to 816°C (1500°F). Then the steels are directly heated by increasing the temperature to 1010°C (1850°F) followed by holding for 15 to 40 mins. The steels are then air-quenched.
Hardness
Hardness tests were made on 1-in. round specimens of H13 which were air quenched from 1850°F and tempered for two hours at various temperatures.
Hardening
H13 tool steel is a steel having very high hardenability and should be hardened by cooling in still air. The use of a salt bath or controlled atmosphere furnace is desirable to minimize decarburization, and if not available, pack hardening in spent pitch coke is suggested. The temperature employed is usually 1800°-1850°F, depending on size section.
Thermal Properties
Properties |
Conditions |
– |
– |
T (ºC) |
Treatment |
– |
– |
Thermal expansion |
10.4 x 10-6/ºC |
20-100 |
– |
Thermal conductivity |
28.6 W/mK |
215 |
– |
Forging Properties
H13 tool steels are forged at 1079°C (1975°F). For this type of steels, forging below 898°C (1650°F) is not preferable.
Stress Relieving
When desirable to relieve the strains of machining, heat slowly to 1050°-1250°F, allow to equalize, and then cool in still air (Strain Relieving)
Welding
H13 tool steels are readily weldable.
Machinability
The machinability rate of H13 tool steels is nearly 75% of that of the W group tool steels.
Mechanical Properties
Properties |
Metric |
Imperial |
Tensile strength, ultimate (@20°C/68°F, varies with heat treatment) |
1200 – 1590 MPa |
174000 – 231000 psi |
Tensile strength, yield (@20°C/68°F, varies with heat treatment) |
1000 – 1380 MPa |
145000 – 200000 psi |
Reduction of area (@20°C/68°F) |
50.00% |
50.00% |
Modulus of elasticity (@20°C/68°F) |
215 GPa |
31200 ksi |
Poisson’s ratio |
0.27-0.30 |
0.27-0.30 |
Physical Properties
Properties |
Metric |
Imperial |
Density (@20°C/68°F) |
7.80 g/cm3 |
0.282 lb/in3 |
Melting point |
1427°C |
2600°F |
Tempering
Tempering practice may vary with size and application, but is usually performed in the range of maximum secondary hardness or higher. Double tempering is recommended. The results below is H13 that was air quenched from 1800°F and tempered for 4 hours at various temperatures. The results may be used as a guide, keeping in mind that parts of heavy section or mass may be several points lower in hardness.
Normalizing
Do Not Normalize.
Annealing
H13 tool steels are annealed at 871°C (1600°F) and slowly cooled at 4°C (40°F) in the furnace.
Density
Properties |
Metric |
Imperial |
Density (@20°C/68°F) |
7.80 g/cm3 |
0.282 lb/in3 |
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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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.
