Standards : X37CrMoW 5-1

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Total Weight: 0.00 kg
Element Content (%)
Carbon (C)0.30 – 0.40
Chromium (Cr)4.75 – 5.50
Molybdenum (Mo)1.10 – 1.75
Tungsten (W)0.90 – 1.40
Vanadium (V)0.20 – 0.50
Silicon (Si)0.80 – 1.20
Manganese (Mn)0.20 – 0.50
Phosphorus (P)≤ 0.03
Sulfur (S)≤ 0.03

Grade Brief

H12 hot work Die Steel could be a five-hitter Cr, general hot work steel that is characterized by glorious impact toughness. It contains less vanadium than the widely-used H13 hot work tool steel, and also the tungsten content provides higher temper resistance. it has smart resistance to thermal fatigue cracking (heat checking) and excellent resistance to gross cracking and thermal shock once water cooled in commission.TLS H12 hot work tool steel is usually recommended for warm tooling applications wherever most resistance to cracking is needed. Such applications embrace hot punches, die casting dies, shaping dies, hot shear blades, hot gripper dies, and extrusion tooling.

General-purpose hot work steel with 4.75–5.5% chromium is known as AISI H12 tool steel. Vanadium content in H12 tool steel is (0.2–0.5%) lower than in the more popular H13 hot work tool steel (0.8–1.2%). A deep-hardening, air-hardening steel known as ASTM/AISI H12 experiences little size change following heat treatment. When water cooled in service, H12 tool steel material exhibits high resistance to gross cracking and thermal shock as well as good resistance to thermal fatigue cracking (heat cracking). Therefore, we may state that the following qualities best describe H-12 tool steel:

– Excellent resistance to wear, high strength at elevated temperatures.
– Good homogenizing with high toughness.
– Extra- fine- structure without grain-boundary carbide.
– Inclusion shape controlled with high cleanliness.

Mode of Supply

Kuber Multi Metals is the largest stockiest and supplier of H12 tool steel in flat, square and round bar. We provide steel in all sizes as your requirements. H12 die steel is available in flat, square and round shape. Consult our team who will assist you for H12 steel query.

P20-Round
ROUND
SQUARE
P20-Flat
FLAT

Steel Properties

Excellent Resistance to Wear, High Strength at Elevated Temperature with good Homogenizing with High Toughness. Extra- Fine- Structure without Grain-Boundary Carbide.

Mechanical Properties
Property Typical Value
Hardness44 – 52 HRC
Tensile Strength~1100 – 1400 MPa
Yield Strength~900 – 1100 MPa
Elongation (A5)≥ 10%
Impact Toughness (ISO-V)~25 – 35 J at room temp

Physical Properties

Depending on the precise composition and heat treatment of the H10/ DIN 2365/ AISI H10 steel, the physical attributes may differ somewhat. Its always advisable to refer to the manufacturer’s specifications for accurate information.

Coefficient of Thermal Expansion
Temp. Range (°C) 20–100 20–250 20–500
Expansion Coefficient 11.7 12.4 12.9
Thermal Conductivity
Temperature (°C) 20 250 500
Thermal Conductivity 24.2 25.6 28.0

Heat Treatment

Process Temperature Range Notes
Soft Annealing 800 – 850°C Furnace cool to ~600°C, then air cool
Hardening 1020 – 1050°C Air or oil quench
Tempering 500 – 650°C (2–3 cycles) Double tempering recommended
Stress Relief ~600°C After heavy machining

Application

High-performance die casting molds, Hot extrusion dies, Hot forging tools and punches, Shear blades for hot work, Tools exposed to high mechanical and thermal stress

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