1.2344 SKD61 H13 X40crmov5-1 Tool Steel Forge Rolled Bars Flats

• Type: Special Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Ferrous Steel Scrap
• Technique: Forged
• Shape: Bar
• Surface Treatment: Polished
• Model NO.: H13 tool steel
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Transport Package: Wooden
• Specification: 6-400mm
• Trademark: Smooth
• Origin: China
• HS Code: 7214100000
• Production Capacity: 5000

Product Description

1.2344/SKD61/H13 Tool Steel/
H13 Tool Steel is a 5% Cr hot work tool steel with good combination of properties such as high toughness and hot resistance. Its alloy design makes H13 a very versatile tool steel, employed in several application in hot work tooling and also in plastic moulds. In service, H13 presents the following behaviour:
- Good homogeneity of properties in all directions;
- High resistance to heat-checking and gross cracking;
- Good machinability and polishability;
- High hardenability and good dimensional stability during heat treating.
- Good heat conductivity.
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.
Also available as Electro-Slag-Remelted (ESR) products as well. The remelting processes provide improved chemical homogeneity, refinement of carbide size, and the associated improvements in mechanical properties and fatigue properties.

1.Size Range for H13 Tool Steel
H13 Steel Round Bar: diameter 80mm~420mm
H13 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.H13 Tool Steel Equivalent Grades

Country	USA	German		Japan	China
Standard	ASTM A681	W-nr.	DIN	JISG4404	GB/T1299-2000
Grades	H13	1.2344	X40CrMoV5	SKD61	4Cr5MoSiV1

3.H13 Tool Steel Chemical Composition

Grades	C%	Si%	Mn%	P%	S%	Cr%	Mo%	V%
H13	0.32~0.45	0.80~1.20	0.20~0.50	≤0.03	≤0.03	4.75~5.50	1.10~1.75	0.80~1.20
1.2344/X40CrMoV5	0.37~0.42	0.90~1.20	0.30~0.50	≤0.03	≤0.03	4.80~5.50	1.20~1.50	0.90~1.10
SKD61	0.35~0.42	0.80~1.20	0.25~0.50	≤0.03	≤0.02	4.80~5.50	1.00~1.50	0.80~1.15

4.H13 Tool Steel Mechanical Properties
 Approximate tensile strength at room temperature.

Properties	52HRC	45RHC
Tensile strength	263,000psi 1820N/mm^2	206,000psi 1420N/mm^2
Yield strength	220,000psi 1520N/mm^2	185,000psi 1280N/mm^2
Reduction of area	50%	50%
Poisson ratio	0.27~0.30	0.27~0.30

The mechanical properties of H13 tool steel at annealed condition are not good enough to withstand the high stress and high friction environment because its hardness level is about 15RC, which is significantly lower than the practically required hardness of 49RC. So in order for H13 tool steel to be applicable for such hot working environment, the material must undergo a series of hardening process to increase the material hardness, and also surface hardening, such as nitriding to improve the wear resistance.
5.Forging of H13 Tool Steel

Items	Heating temperature	Starting forging temperature	Final forging temperature	Cooling
Ingot	2084~2156°F (1140~1180°C)	2012~2102°F (1100~1150°C)	1562~1652°F (850~900°C)	Slow cooling(in hole or sand)
billet	2048~2102°F (1120~1150°C)	1922~2012°F (1050~1100°C)	1562~1652°F (850~900°C)	Slow cooling(in hole or sand)

6.Heat Treatment for H13 Tool Steel
Soft Annealing
  Protect the steel and heat through to 1560°F (850°C). Then cool in the furnace at 20°F (10°C) per hour to 1200°F (650°C), then freely in air.
Stress Relieving
   After rough machining the tool should be heated through to 1200°F (650°C), holding time 2 hours. Cool slowly to 930°F (500°C), then freely in air. 
Hardening
   Pre-heating temperature: 1110-1560°F (600-850°C), normally in two pre-heating steps.
Austenitizing temperature: 1870-1920°F (1020-1050°C), normally 1870-1885°F (1020-1030°C).

Temperature		Soaking Time (Minutes)	Hardness before tempering
°F	°C
1875	1025	30	53±2 HRC
1920	1050	15	53±2 HRC

Quenching
  Quench in still air or dry air blast. If complicated forms are to be hardened, an interrupted oil quench can be used. Quench part in oil and remove from bath when it just loses its color (1000°-1100°F). Finish cooling to below 150°-125°F in air, then temper immediately.


Tempering
  For hot work applications, H13 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 hardnesses of HRC 40 to 44. The steel should be held at the tempering temperature for at least two hours per inch of greatest cross section. All hot work steel should be tempered at a minimum of 50 degrees above the expected maximum operating temperature of the tool or die. Double tempering, with the second temper of 25 to 50 degrees lower than the first temper is always advisable, particularly where heat checking is a problem.
7.Applications of H13 Tool Steel
  Tools for Extrusion

Part	Aluminium,magnesium alloys,HRC	Copper alloys HRC	Stainless steel HRC
Dies,Backers,die-holders,liners,dummy blocks,stems	44~50 41~50	43~47 40~48	45~50 40~48
Austenitizing temperature	1875~1885°F (1020~1030°C)	1900~1920°F (1040~1050°C)

Plastic Molding Application

Part	Austenitizing temperature	HRC
Injection molds compression, Transfer molds	1870~1885°F(1020~1030°C) Tempering 480°F(250°C)	50~52

Other Applications

Application	Austenitizing temperature	HRC
Severe cold punching,scrap shears	1870~1885°F(1020~1030°C) Tempering 480°F(250°C)	50~52
Hot shearing	1870~1885°F(1020~1030°C) Tempering 480°F(250°C) or 1070~1110°F(575~600°C)	50~52 45~50
Shrink rings(e.g. for cemented carbide dies)	1870~1885°F(1020~1030°C) Tempering 1070~1110°F(575~600°C)	45~50
Wear resisting parts	1870~1885°F(1020~1030°C) Tempering 1070°F(575°C) nitrided	Core 50~52 surface~1000HV1

The above is just a brief introduction of H13 Tool Steel,which is unlikely to be explained in detail here.If you have any questions about it ,please feel free to leave us a message,so we could discuss it together!