Hot Rolled Alloy Steel Scm440 415 Round Bar Price

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Hot Rolled
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Surface Treatment: Coated
• Alloy: Alloy
• Model NO.: EL-RB
• Special Use: Mold Steel
• Length: 1-12m
• Certificate: ISO
• Delivery Time: 15-30days After Down Payment
• Standard or Not: Standard
• Secondary or Not: Non Second
• Price Term: Fob,CIF,CNF
• Payment: L/C,T/T
• Surface: Peeling, Turning, Polishing
• Material: Scm415/440,etc
• Transport Package: in Bundle or as Requested
• Specification: 10mm-900mm
• Trademark: Kingmetal
• Origin: China
• HS Code: 72166900
• Production Capacity: 500000tons Per Month

Product Description

Chemical Element for JIS SCM440 round alloy steel bar

Standard	Grade Number
GB	42CrMo	C	Si	Mn	P	S	Cr	Ni	Mo	Cu
ASTM	4140	0.36-0.44	0.10-0.40	0.65-1.10	≤0.04	≤0.04	0.75-1.20	-	0.15-0.35	≤0.030
DIN	42CrMo4 1.7225	0.35-0.44	0.15-0.30	0.70-0.90	≤0.035	≤0.04	0.80-1.10	-	0.15-0.25	≤0.025
JIS	SCM440	0.38-0.42	0.15-0.35	0.60-0.85	≤0.03	≤0.03	0.9-1.20	≤0.25	0.15-0.30	≤0.30

Physical Properties for JIS SCM440 round alloy steel bar

Physical Properties
Tensile Strength (MPa)		≥1080(110)
Yield strength(MPa)		≥930(95)
Elongation(%)		≥12
Reduction of area(%)		≥45
Akv (J)		≥63
Impact roughness(J/cm2)		≥78(8)
Hardness		≤217HB
Specimen size		25mm

Surface Treatment: painting,plating,polishing,black oxide,transparent anti-rust oil

Heat treatment: Normalized / Annealed / Quenched / tempered

Processing
 
Electric arc furnace melting→refining furnace→vacuum treatment furnace→
→cast ingot→steel ingot anneal→ heating → high-speed forging, refining
forging→annel,retarded cooling,air cooling→quenching and tempering
treatment→finishing operation→test→finished products
 
Application:
Foodstuff, gas, metallurgy, biology, electron, chemical, petroleum, boilers, nuclear, energy, construction field, ships building industry, war and electricity industry, boiler heat exchanger, machiner and hardware fields and medical equipment, fertilizer, etc.  
 

Symbol of Class	Chemical Composition %
	C	Si	Mn	P Max.	S Max.	Cr	Mo
SCM 415	0.130.18	0.150.35	0.600.85	0.030	0.030	0.901.20	0.150.30
SCM 418	0.160.21	0.150.35	0.600.85	0.030	0.030	0.901.20	0.150.30
SCM 420	0.180.23	0.150.35	0.600.85	0.030	0.030	0.901.20	0.150.30
SCM 421	0.170.23	0.150.35	0.701.00	0.030	0.030	0.901.20	0.150.30
SCM 430	0.280.33	0.150.35	0.600.85	0.030	0.030	1.001.50	0.150.30
SCM 432	0.270.37	0.150.35	0.300.60	0.030	0.030	0.901.20	0.150.30
SCM 435	0.330.38	0.150.35	0.600.85	0.030	0.030	0.901.20	0.150.30
SCM 440	0.380.43	0.150.35	0.600.85	0.030	0.030	0.901.20	0.150.30
SCM 445	0.430.48	0.150.35	0.600.85	0.030	0.030	0.901.20	0.150.30
SCM 822	0.200.25	0.150.35	0.600.85	0.030	0.030	0.901.20	0.150.30
Note : As impurities, Ni and Cu shall not exceed 0.25% and 0.30% respectively for all grades.

Application:
Foodstuff, gas, metallurgy, biology, electron, chemical, petroleum, boilers, nuclear, energy, construction field, ships building industry, war and electricity industry, boiler heat exchanger, machiner and hardware fields and medical equipment, fertilizer, etc.