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H13 steel forgings
What is H13 steel?
H13 steel is a chromium molybdenum hot work steel. H13 steel is well known for its outstanding hot hardness and abrasion resistance. H13 steel is ideal material for a various hot work usages. Because of its general hardness and toughness, H13 steel can also be used in cold work applications.
H13 steel Applications
H13 steel material can be available as bars, flats, billets and forgings. The typical thermal processing applications of our H13 steel include die casting dies, forging dies, extrusion dies, inserts, plungers, cores, ejector pins, sleeves, slides, dummy blocks, mandrels and hot shears. Other tooling and structural applications include beams, shafts, punches, torsion bars, shrouds and ratchets.
H13 tool steel As Tools for Extrusion
| Part | Aluminum, mag¬nesium alloys, HRC | Copper alloys HRC | Stainless steel HRC |
|---|---|---|---|
|
Dies, Backers, die-holders, liners, dummy blocks, stems |
44-50 |
43-47 |
45-50 |
|
Dies, Backers, die-holders, liners, dummy blocks, stems |
41-50 |
40-48 |
40-48 |
|
Austenitizing temperature |
1,870-1,885°F |
1,900-1,920°F |
|
|
Austenitizing temperature |
(1,020-1,030°C) |
(1,040-1,050°C) |
|
H13 steel As Plastic Molding Tool Steel
| Part | Austenitizing temp. | HRC |
|---|---|---|
|
Injection molds Compression/ transfer molds |
1,870-1,885°F (1,020-1,030°C) |
50-52 |
|
Tempering 480°F (250°C) |
H13 tool steel chemical composition (%)
| Standard | AISI (UNS) | C | Si | Mn | P | S | Cr | Mo | V |
|---|---|---|---|---|---|---|---|---|---|
|
ASTM A681 |
H13
(T20813)
|
0.32-0.45 |
0.80-1.25 |
0.20-0.60 |
0.030 |
0.030 |
4.75-5.50 |
1.10-1.75 |
0.80-1.20 |
H13 steel 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 |
H13 steel hardness
For hot work applications, H13 tool steel is used in the hardness range of HRC 38 to 48. The usual hardness range for die casting dies is HRC 44 to 48 requiring a temper at approximately 1100°F. For improved shock resistance, the steel is often tempered at temperatures approaching 1150°F, resulting in hardness of HRC 40 to 44.
H13 steel hardness range is 28-53 HRC varies with tempering temperature, all specimens are air-cooled from 1025 °C (1875 °F) and tempered at temperature for 2 hours.