A8
2018-04-09 22:12:11
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Steel Grade: ASTM A8| UNS: T30108
CHEMICAL COMPOSITION(A8):
C(％) : 0.50～0.60
Si(％) : 0.75～1.10
Mn(％) : 0.20～0.50
P(％)≤: 0.03
S(％)②: 0.03
Cr(％) : 4.75～5.50
Mo(％) : 1.15～1.65
V(％) : —
W(％) : 1.00～1.50
Other①: —
HARDNESS AND HEAT TREATMENT (A8):
Hardness HBS|After Annealing: 241
Hardness HBS|After Cold Drawing: 262
Preheating Temperature/℃: 788
Quenching/℃|Salt-bath Furnace: 996
Quenching/℃|Controlled Atmosphere Furnace: 1010
Holding Time/min: 5～15
Quenching Medium: Air Cooling
Tempering/℃: 510
Hardness≥HRC|After Tempering: 56
Remark(A8):
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 A8
Introduction Alloy Tool Steel (A8)
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, A8
ASTM D2, X155CrMoV12-1, ASTM D3, AISI H11, AISI H13,
Steel Grade: ASTM A8| UNS: T30108
CHEMICAL COMPOSITION(A8):
C(％) : 0.50～0.60
Si(％) : 0.75～1.10
Mn(％) : 0.20～0.50
P(％)≤: 0.03
S(％)②: 0.03
Cr(％) : 4.75～5.50
Mo(％) : 1.15～1.65
V(％) : —
W(％) : 1.00～1.50
Other①: —
HARDNESS AND HEAT TREATMENT (A8):
Hardness HBS|After Annealing: 241
Hardness HBS|After Cold Drawing: 262
Preheating Temperature/℃: 788
Quenching/℃|Salt-bath Furnace: 996
Quenching/℃|Controlled Atmosphere Furnace: 1010
Holding Time/min: 5～15
Quenching Medium: Air Cooling
Tempering/℃: 510
Hardness≥HRC|After Tempering: 56
Remark(A8):
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 A8
Introduction Alloy Tool Steel (A8)
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, A8
ASTM D2, X155CrMoV12-1, ASTM D3, AISI H11, AISI H13,
