S1

S1 Tool Die Steels

S1 - Specification & Application

Shock-Resisting Tool Steel

Chemical composition(wt.%) of S1 grade:

Elements Min.（≥） Max.（≤） Similar Remarks
C 0.40 0.55
Si 0.15 1.20
Mn 0.10 0.40
P - 0.030
S - 0.030
Cr 1.00 1.80
Mo - 0.50
V 0.15 0.30
W 1.50 3.00
Ni＋Cu - 0.75

S1 - Detail

Shock-Resisting Tool Steel

Mechanical properties of grade S1

Proof strength
Rp0.2 (MPa)		 Tensile strength
Rm (MPa)		 Impact energy
KV (J)		 Elongation at fracture
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
735 (≥) 423 (≥) 41 33 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical properties of grade S1

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm		 Modulus of elasticity
kN/mm2		 Expansion rate
261 (≥) 856 (≥) 33 43 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 422
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
177 966 496

Equivalent Grade

1 S1 2 M3 Class1 3 X33CrS16 4 S12-1-4-5 5 S10-4-3-10 6 S18-1-2-5 7 S18-1-2-15 8 S18-1-2-10 9 S12-1-4 10 S12-1-2 11 A 581 S18200 12 A 582 S18200 13 S18200 14 A 581 S18235 15 A 582 S18235 16 A 959 S18235 17 S18235 18 A 564 S13800 19 A 693 S13800 20 A 705 S13800

Equivalent Products

1 Incoloy800 round bar 2 17-4PH(UNS S17400) AMS 5604 hot extruded tube pipe 3 17-7PH(631,UNS S17700,1.4541) AMS 5528 Stainless Steel Coil 4 17-4PH Stainless Steel Seamless Tube 5 X3CRNIMOAL13-8-2, 1.4534, PH13-8MO, UNS S13800

Product shapes we supply:

We can customize the production of S1 grade, contact us for the best solution.
–sales@specificsteel.com