H25
2018-04-09 22:12:11
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Steel Grade: ASTM H25| UNS: T20825
CHEMICAL COMPOSITION(H25):
C(％) : 0.22～0.32
Si(％) : 0.15～0.40
Mn(％) : 0.15～0.40
P(％)≤: 0.03
S(％)②: 0.03
Cr(％) : 3.75～4.50
Mo(％) : —
V(％) : 0.40～0.60
W(％) : 14.0～16.0
Other①: —
HARDNESS AND HEAT TREATMENT (H25):
Hardness HBS|After Annealing: 235
Hardness HBS|After Cold Drawing: 262
Preheating Temperature/℃: 788
Quenching/℃|Salt-bath Furnace: 1232
Quenching/℃|Controlled Atmosphere Furnace: 1246
Holding Time/min: 5～15
Quenching Medium: Air Cooling
Tempering/℃: 552
Hardness≥HRC|After Tempering: 44
Remark(H25):
①, Residual elements content: Ni＋Cu≤0.75％.
②, A,D,H series to improve machinability, sulfur content can be increased to ω(S)0.06％～0.15％.
③, Increase the H13 sulfur, the upper limit of manganese content can reach ω(Mn)1.00%.
④, It also have Al which is ω(Al)1.05％～1.25％.
⑤, P20 and P21 usually to pre hardened state supplies.
⑥, After tempering hardness L2 refers to the hardness of ω(C)0.45％～0.55％.
⑦, It standard is ASTM A681-1999.
Please find the PDF for H25
Introduction Alloy Tool Steel (H25)
Alloy tool steel, carbon tool steel with Si, Mn, Ni, Cr, Mo, V, W and other alloy elements in order to improve the hardenability and toughness, wear resistance and heat resistance of steel.Add Cr and Mn can improve the hardenability of tool steel, according to the requirements, selectively to join or add other elements (adding amount is generally not more than 5%), that is, to form a series of alloy tool steel.It is mainly used in the manufacture of measuring tools and cutters, shock resistant and cold and hot mould and some special purpose tools.
HOT SALE:
SA-675GR70, SA-387GR91, X6NiCrTiMoVB25-15-2, 17-4PH, 15-5PH,
ASTM 630, X3CrNiMo13-4, UNS41500, X10CrNiTi18-10, S17400,
X5CrNiCuNbl6-4, 316Ti, 301A, 303, 304L, 310S, 316L, 317L, 321,
NKA80, DIN 1.4731, DIN 1.4021, DIN 1.4016, DIN 1.4571, DIN 1.4418,
616, 440B, 440C, 431, 430FR, 430F, 430, 422, 416, 410, 405, H25
ASTM D2, X155CrMoV12-1, ASTM D3, AISI H11, AISI H13,
Steel Grade: ASTM H25| UNS: T20825
CHEMICAL COMPOSITION(H25):
C(％) : 0.22～0.32
Si(％) : 0.15～0.40
Mn(％) : 0.15～0.40
P(％)≤: 0.03
S(％)②: 0.03
Cr(％) : 3.75～4.50
Mo(％) : —
V(％) : 0.40～0.60
W(％) : 14.0～16.0
Other①: —
HARDNESS AND HEAT TREATMENT (H25):
Hardness HBS|After Annealing: 235
Hardness HBS|After Cold Drawing: 262
Preheating Temperature/℃: 788
Quenching/℃|Salt-bath Furnace: 1232
Quenching/℃|Controlled Atmosphere Furnace: 1246
Holding Time/min: 5～15
Quenching Medium: Air Cooling
Tempering/℃: 552
Hardness≥HRC|After Tempering: 44
Remark(H25):
①, Residual elements content: Ni＋Cu≤0.75％.
②, A,D,H series to improve machinability, sulfur content can be increased to ω(S)0.06％～0.15％.
③, Increase the H13 sulfur, the upper limit of manganese content can reach ω(Mn)1.00%.
④, It also have Al which is ω(Al)1.05％～1.25％.
⑤, P20 and P21 usually to pre hardened state supplies.
⑥, After tempering hardness L2 refers to the hardness of ω(C)0.45％～0.55％.
⑦, It standard is ASTM A681-1999.
Please find the PDF for H25
Introduction Alloy Tool Steel (H25)
Alloy tool steel, carbon tool steel with Si, Mn, Ni, Cr, Mo, V, W and other alloy elements in order to improve the hardenability and toughness, wear resistance and heat resistance of steel.Add Cr and Mn can improve the hardenability of tool steel, according to the requirements, selectively to join or add other elements (adding amount is generally not more than 5%), that is, to form a series of alloy tool steel.It is mainly used in the manufacture of measuring tools and cutters, shock resistant and cold and hot mould and some special purpose tools.
HOT SALE:
SA-675GR70, SA-387GR91, X6NiCrTiMoVB25-15-2, 17-4PH, 15-5PH,
ASTM 630, X3CrNiMo13-4, UNS41500, X10CrNiTi18-10, S17400,
X5CrNiCuNbl6-4, 316Ti, 301A, 303, 304L, 310S, 316L, 317L, 321,
NKA80, DIN 1.4731, DIN 1.4021, DIN 1.4016, DIN 1.4571, DIN 1.4418,
616, 440B, 440C, 431, 430FR, 430F, 430, 422, 416, 410, 405, H25
ASTM D2, X155CrMoV12-1, ASTM D3, AISI H11, AISI H13,
